For years, Apple and Sonos have unsuccessfully tried to resolve my WiFi dropping issues. I’m still using my antiquated Apple Express as WiFi extender in Bridge Mode for my yard. Ai finally resolved years long issue. My Apple AirPort Express is connected to AirPort Extreme via Ethernet cable through a standard unmanaged switch. My Sonos Connect is also connected to the same switch which caused Spanning Tree Protocol (STP) causing Extreme to repeatedly drop and reconnect. Sonos Connect was still trying to broadcast its own wireless mesh network (SonosNet) creating a wireless-to-wired loop in the switch.
Resolved: In Sonos Connect Settings, the WiFi has to be switched to Disabled.
Hope this helps others those who still have wired phones. 🤣
