I'm in the middle of a job where a Genie 2 server was placed in a rack close to an Eero AP and a few Sonos connect amps. The following occurred twice in less than a week:
Several DTV receivers will display "can not connect to server". At the same time, tablets and laptops can be connected to Eero SSID but there is no network/internet broadcast. I was able to see remotely that the eeros were connected and the internet connection was good. Customer pulled the plug on the rack and wifi and DTV were restored after reboot.

When I return I will move Eero from rack, disable wifi on Sonos(all hard wired) and also try to relocate Genie server. No DTV boxes are wireless, all coax connected. Is there a way to disable wifi on the Genie server? Any other ideas?