Update for github issue

-------
cc: @rboucher

Author: rboucher

articles/azure-monitor/essentials/diagnostic-settings.md

@@ -5,7 +5,7 @@ author: rboucher
 ms.author: robb
 services: azure-monitor
 ms.topic: conceptual
-ms.date: 03/07/2022
+ms.date: 09/30/2022
 ms.reviewer: lualderm
 ---
 
@@ -88,6 +88,12 @@ The activity log uses a diagnostic setting but has its own user interface becaus
 
 This section discusses requirements and limitations.
 
+### Time before telemetry gets to destination
+
+Once you have set up a diagnostic setting, data should start flowing to your selected destination(s) with 90 minutes. If you get no information within 24 hours, then either 
+- no logs are being generated or 
+- something is wrong in the underlying routing mechanism. Try disabling the configuration and then reenabling it. Contact Azure support through the Azure portal if you continue to have issues. 
+
 ### Metrics as a source
 
 There are certain limitations with exporting metrics: