How do I remove an old AppleTV from the Home app?

I’m looking for help. I recently plugged in an old AppleTV to wipe it and pass it on. It is no longer in my possession. Unfortunately it shows up in every Home app (Mac, iPad, iPhone, wife’s iPad etc) as a “can’t connect” device in the status (but no tile to actually click on). It is listed as “disconnected” in the ‘hubs’ list. I’ve already tried the solution of looking at the list of iCloud connected devices (on mine, my wife’s and my son’s account) and removing it, but the status message is still there. Any other ideas? I know it doesn’t really affect the function of my home (or life), but I’m a bit OCD and it annoys me. Assistance gratefully received!