diff --git a/doc/releases/release-notes-4.1.rst b/doc/releases/release-notes-4.1.rst
index e23bdb695f3c6..3b712ec57ce93 100644
--- a/doc/releases/release-notes-4.1.rst
+++ b/doc/releases/release-notes-4.1.rst
@@ -178,6 +178,8 @@ Deprecated APIs and options
 
 * :kconfig:option:`CONFIG_BT_BUF_ACL_RX_COUNT`
 
+* :kconfig:option:`CONFIG_BT_CTLR_SCAN_AUX_SET`
+
 * All HWMv1 board name aliases which were added as deprecated in v3.7 are now removed
   (:github:`82247`).
 
diff --git a/samples/bluetooth/hci_ipc/nrf5340_cpunet_bis-bt_ll_sw_split.conf b/samples/bluetooth/hci_ipc/nrf5340_cpunet_bis-bt_ll_sw_split.conf
index 9e32256218423..9da71aaca7d1a 100644
--- a/samples/bluetooth/hci_ipc/nrf5340_cpunet_bis-bt_ll_sw_split.conf
+++ b/samples/bluetooth/hci_ipc/nrf5340_cpunet_bis-bt_ll_sw_split.conf
@@ -68,9 +68,10 @@ CONFIG_BT_CTLR_ADV_SYNC_PDU_BACK2BACK=y
 CONFIG_BT_CTLR_ADV_DATA_BUF_MAX=6
 
 # Increase the below to receive interleaved advertising chains
-CONFIG_BT_CTLR_SCAN_AUX_SET=3
-# CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
-# CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=1
+CONFIG_BT_CTLR_LOW_LAT_ULL=y
+# CONFIG_BT_CTLR_SCAN_AUX_SET=3 # DEPRECATED
+CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
+CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=3
 
 CONFIG_BT_CTLR_ADV_RESERVE_MAX=n
 CONFIG_BT_CTLR_SCAN_UNRESERVED=y
diff --git a/samples/bluetooth/hci_ipc/nrf5340_cpunet_cis-bt_ll_sw_split.conf b/samples/bluetooth/hci_ipc/nrf5340_cpunet_cis-bt_ll_sw_split.conf
index 740de0cc83eb6..175826fa223cc 100644
--- a/samples/bluetooth/hci_ipc/nrf5340_cpunet_cis-bt_ll_sw_split.conf
+++ b/samples/bluetooth/hci_ipc/nrf5340_cpunet_cis-bt_ll_sw_split.conf
@@ -65,9 +65,10 @@ CONFIG_BT_CTLR_ADV_AUX_PDU_BACK2BACK=y
 CONFIG_BT_CTLR_ADV_DATA_BUF_MAX=6
 
 # Increase the below to receive interleaved advertising chains
-CONFIG_BT_CTLR_SCAN_AUX_SET=3
-# CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
-# CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=1
+CONFIG_BT_CTLR_LOW_LAT_ULL=y
+# CONFIG_BT_CTLR_SCAN_AUX_SET=3 # DEPRECATED
+CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
+CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=3
 
 CONFIG_BT_CTLR_ADV_RESERVE_MAX=n
 CONFIG_BT_CTLR_CENTRAL_RESERVE_MAX=n
diff --git a/samples/bluetooth/hci_ipc/nrf5340_cpunet_df-bt_ll_sw_split.conf b/samples/bluetooth/hci_ipc/nrf5340_cpunet_df-bt_ll_sw_split.conf
index 663751c16e65e..c0455360ef21a 100644
--- a/samples/bluetooth/hci_ipc/nrf5340_cpunet_df-bt_ll_sw_split.conf
+++ b/samples/bluetooth/hci_ipc/nrf5340_cpunet_df-bt_ll_sw_split.conf
@@ -53,9 +53,10 @@ CONFIG_BT_CTLR_ADV_SYNC_PDU_BACK2BACK=y
 CONFIG_BT_CTLR_ADV_DATA_BUF_MAX=6
 
 # Increase the below to receive interleaved advertising chains
-CONFIG_BT_CTLR_SCAN_AUX_SET=1
-# CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
-# CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=1
+CONFIG_BT_CTLR_LOW_LAT_ULL=y
+# CONFIG_BT_CTLR_SCAN_AUX_SET=3 # DEPRECATED
+CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
+CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=3
 
 CONFIG_BT_CTLR_SCAN_UNRESERVED=y
 CONFIG_BT_TICKER_NEXT_SLOT_GET_MATCH=y
diff --git a/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso-bt_ll_sw_split.conf b/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso-bt_ll_sw_split.conf
index 710530568acb8..37ec9e3383d45 100644
--- a/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso-bt_ll_sw_split.conf
+++ b/samples/bluetooth/hci_ipc/nrf5340_cpunet_iso-bt_ll_sw_split.conf
@@ -77,10 +77,10 @@ CONFIG_BT_CTLR_ADV_SYNC_PDU_BACK2BACK=y
 CONFIG_BT_CTLR_ADV_DATA_BUF_MAX=6
 
 # Increase the below to receive interleaved advertising chains
-CONFIG_BT_CTLR_SCAN_AUX_SET=3
 CONFIG_BT_CTLR_LOW_LAT_ULL=y
-# CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
-# CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=1
+# CONFIG_BT_CTLR_SCAN_AUX_SET=3 # DEPRECATED
+CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
+CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=3
 
 CONFIG_BT_CTLR_ADV_RESERVE_MAX=n
 CONFIG_BT_CTLR_ADV_ISO_RESERVE_MAX=y
diff --git a/samples/bluetooth/hci_uart/overlay-all-bt_ll_sw_split.conf b/samples/bluetooth/hci_uart/overlay-all-bt_ll_sw_split.conf
index 05fbeb7be7808..adab4940dbb47 100644
--- a/samples/bluetooth/hci_uart/overlay-all-bt_ll_sw_split.conf
+++ b/samples/bluetooth/hci_uart/overlay-all-bt_ll_sw_split.conf
@@ -52,9 +52,10 @@ CONFIG_BT_CTLR_ADV_SYNC_PDU_BACK2BACK=y
 CONFIG_BT_CTLR_ADV_DATA_BUF_MAX=6
 
 # Increase the below to receive interleaved advertising chains
-CONFIG_BT_CTLR_SCAN_AUX_SET=3
-# CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
-# CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=1
+CONFIG_BT_CTLR_LOW_LAT_ULL=y
+# CONFIG_BT_CTLR_SCAN_AUX_SET=3 # DEPRECATED
+CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
+CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=3
 
 CONFIG_BT_CTLR_ADV_RESERVE_MAX=n
 CONFIG_BT_CTLR_ADV_ISO_RESERVE_MAX=y
diff --git a/samples/bluetooth/hci_uart_3wire/overlay-all-bt_ll_sw_split.conf b/samples/bluetooth/hci_uart_3wire/overlay-all-bt_ll_sw_split.conf
index 48a48893dc8c2..3ec101a6f556a 100644
--- a/samples/bluetooth/hci_uart_3wire/overlay-all-bt_ll_sw_split.conf
+++ b/samples/bluetooth/hci_uart_3wire/overlay-all-bt_ll_sw_split.conf
@@ -51,9 +51,10 @@ CONFIG_BT_CTLR_ADV_SYNC_PDU_BACK2BACK=y
 CONFIG_BT_CTLR_ADV_DATA_BUF_MAX=6
 
 # Increase the below to receive interleaved advertising chains
-CONFIG_BT_CTLR_SCAN_AUX_SET=3
-# CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
-# CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=1
+CONFIG_BT_CTLR_LOW_LAT_ULL=y
+# CONFIG_BT_CTLR_SCAN_AUX_SET=3 # DEPRECATED
+CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
+CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=3
 
 CONFIG_BT_CTLR_ADV_RESERVE_MAX=n
 CONFIG_BT_CTLR_ADV_ISO_RESERVE_MAX=y
diff --git a/subsys/bluetooth/controller/Kconfig.ll_sw_split b/subsys/bluetooth/controller/Kconfig.ll_sw_split
index a4954e89b81aa..15f70f1db56b7 100644
--- a/subsys/bluetooth/controller/Kconfig.ll_sw_split
+++ b/subsys/bluetooth/controller/Kconfig.ll_sw_split
@@ -532,20 +532,13 @@ config BT_CTRL_ADV_ADI_IN_SCAN_RSP
 config BT_CTLR_SCAN_AUX_USE_CHAINS
 	bool "Use new chains based implementation for following advertising chains"
 	depends on BT_OBSERVER && BT_CTLR_ADV_EXT
+	default y
 	help
 	  Use the new chains based implementation of following advertising chains
 	  instead of the old sets based one. The new implementation has a much lighter
 	  footprint, since it limits allocations per advertising chain to the bare
 	  minimum and only uses one ticker
 
-config BT_CTLR_SCAN_AUX_SET
-	int "LE Extended Scanning Auxiliary Sets"
-	depends on BT_OBSERVER && BT_CTLR_ADV_EXT && !BT_CTLR_SCAN_AUX_USE_CHAINS
-	range 1 64
-	default 1
-	help
-	  Maximum supported auxiliary channel scan sets.
-
 config BT_CTLR_SCAN_AUX_CHAIN_COUNT
 	int "LE Extended Scanning Auxiliary Chains"
 	depends on BT_OBSERVER && BT_CTLR_ADV_EXT && BT_CTLR_SCAN_AUX_USE_CHAINS
@@ -555,6 +548,21 @@ config BT_CTLR_SCAN_AUX_CHAIN_COUNT
 	  Maximum number of extended/periodic advertising chains that can be
 	  followed simultaneously
 
+config BT_CTLR_SCAN_AUX_SET
+	int "LE Extended Scanning Auxiliary Sets [DEPRECATED]"
+	depends on BT_OBSERVER && BT_CTLR_ADV_EXT && !BT_CTLR_SCAN_AUX_USE_CHAINS
+	range 1 64
+	default 1
+	help
+	  Maximum supported auxiliary channel scan sets.
+
+config BT_CTLR_SCAN_AUX_SET_DEPRECATED
+	# Hidden Kconfig to select DEPRECATED if BT_CTLR_SCAN_AUX_SET is used
+	bool
+	depends on BT_OBSERVER && BT_CTLR_ADV_EXT && !BT_CTLR_SCAN_AUX_USE_CHAINS
+	select DEPRECATED
+	default y
+
 config BT_CTLR_SCAN_AUX_SYNC_RESERVE_MIN
 	bool "Use minimal Scan Auxiliary and Periodic Sync PDU time reservation"
 	depends on (BT_OBSERVER && BT_CTLR_ADV_EXT) || BT_CTLR_SYNC_PERIODIC
diff --git a/tests/bsim/bluetooth/audio/overlay-bt_ll_sw_split.conf b/tests/bsim/bluetooth/audio/overlay-bt_ll_sw_split.conf
index 502feb63f94be..2338559f92413 100644
--- a/tests/bsim/bluetooth/audio/overlay-bt_ll_sw_split.conf
+++ b/tests/bsim/bluetooth/audio/overlay-bt_ll_sw_split.conf
@@ -23,9 +23,10 @@ CONFIG_BT_CTLR_ADV_SYNC_PDU_BACK2BACK=y
 CONFIG_BT_CTLR_ADV_DATA_BUF_MAX=6
 
 # Increase the below to receive interleaved advertising chains
-CONFIG_BT_CTLR_SCAN_AUX_SET=3
-# CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
-# CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=1
+CONFIG_BT_CTLR_LOW_LAT_ULL=y
+# CONFIG_BT_CTLR_SCAN_AUX_SET=3 # DEPRECATED
+CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
+CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=3
 
 CONFIG_BT_CTLR_ADV_RESERVE_MAX=n
 CONFIG_BT_CTLR_ADV_ISO_RESERVE_MAX=y
diff --git a/tests/bsim/bluetooth/ll/cis/sysbuild/hci_ipc/nrf5340_cpunet_iso_acl_group-bt_ll_sw_split.conf b/tests/bsim/bluetooth/ll/cis/sysbuild/hci_ipc/nrf5340_cpunet_iso_acl_group-bt_ll_sw_split.conf
index be19c24777c28..66d92487cf175 100644
--- a/tests/bsim/bluetooth/ll/cis/sysbuild/hci_ipc/nrf5340_cpunet_iso_acl_group-bt_ll_sw_split.conf
+++ b/tests/bsim/bluetooth/ll/cis/sysbuild/hci_ipc/nrf5340_cpunet_iso_acl_group-bt_ll_sw_split.conf
@@ -62,9 +62,10 @@ CONFIG_BT_CTLR_ADV_SYNC_PDU_BACK2BACK=y
 CONFIG_BT_CTLR_ADV_DATA_BUF_MAX=6
 
 # Increase the below to receive interleaved advertising chains
-CONFIG_BT_CTLR_SCAN_AUX_SET=3
-# CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
-# CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=1
+CONFIG_BT_CTLR_LOW_LAT_ULL=y
+# CONFIG_BT_CTLR_SCAN_AUX_SET=3 # DEPRECATED
+CONFIG_BT_CTLR_SCAN_AUX_USE_CHAINS=y
+CONFIG_BT_CTLR_SCAN_AUX_CHAIN_COUNT=3
 
 CONFIG_BT_CTLR_ADV_RESERVE_MAX=n
 CONFIG_BT_CTLR_CENTRAL_RESERVE_MAX=n