CityHub : bluetooth channels for remote control handset

[TrainsWithLights]

The BLE has 255 channels available for use. Are these channels separate from the Remote Control Handset channels?
When multiple hubs/remotes are in use, how many channels are available for Remote Control Handset connection?

[laurensvalk]

Technically speaking, these aren't really "channels".

The hub and a remote do establish an actual connection and send information packages back and forth.

But broadcasting is more like shouting from a rooftop. Someone may be listening and understand it, or maybe not. The channels here only define the first word (channel number) being shouted. Everyone can hear it, but only those configured to listen for that word (channel number) will do something with it.

Broadcasting is normally used to make a device appear when you scan for it with another device. It normally tells you what device kind it is and what the device name is. We use this technique to send data to another hub by packing it into that advertising message.