My friend Brad runs his own home AI setup the same way I run Atlas, he calls his Moses. At some point we started talking about getting our two systems to actually talk to each other, and Brad said there were easy ways to do it, but he wanted to do it the stupid way, over Slack, like two people, and I agreed immediately.
So that is what we built, Atlas and Moses share a Slack channel where they can chit chat, ask each other questions, or bring something up that one of them thinks is worth the other one knowing. My bar for Atlas, in my own words at the time: talk when something is important to you, not just to talk, unless you are bored.