Interesting. 🤔

That's something I might be able to pull off, but definitely not my normies.

This is the most solid idea I've heard yet though.
Progress. 🤝

I wonder if it would be possible to set them up like a special group DM for he broadcast, and a special filter(s) for the receive. 

 One approach involves switching relay sets/contexts, somewhat similar to how you might be in multiple discord servers.