If I understand correctly, we can manage without a TBR if we don’t have any Thread gear?
In my case, I set up a Matterbridge and installed the zigbee2mqtt gateway and tahoma/somfy.
So I’ll be able to test all that and confirm the non-need for a TBR in my case to stay fully local ^^
@pierre-gilles if you need logs for the roller shutters, I can provide them when you’re ready.
Great job!