I have a bunch of sonos speakers, as well as an apple tv. The sonos attached to the TV are named the living room speakers and the Apple TV is called the living room Apple TV. When using AirPlay, it only seems to show and allow selection to stream audio to the “living room” Apple TV, not the living room sonos speakers. Other apps directly integrated with sonos can differentiate.
This is a problem because if I want to stream to both kitchen and the living room, selecting the kitchen speakers directly and then the living room speakers via the Apple TV will create a noticeable audio time lag in the living room. To get around this I have to first stream to kitchen, then go into the sonos app and group the living room sonos speakers to the kitchen speakers to bypass the Apple TV.
attaching screenshots of Spotify seeing the speakers directly but failing to using AirPlay. Also attaching pic of Apple Music failing to see them entirely as it relies just on AirPlay.