Indeed- if you have music playing on the Apple TV, then other devices like a BS1 / Edge can join in (using the app or physically tapping them).
Alternatively if you are streaming Apple Music to an Edge for example, you can join the TV setup using your BV11 remote.
The only minor wrinkle with the B&O app is that if you are AirPlaying from an iOS device to multiple products, the B&O app doesn’t see it as a multi room session. A minor issue to me though.
Brill - thank you.
Just thinking out loud...and spare funds allowing.. I would like to get to - 1 speaker (possibly BS/2 or M5) in the kitchen, and then another speaker at the back of the living room (possibly A9 or Edge). Then maybe something like a BS1 or M5 in our bedroom upstairs. The BV11 (with BL9s) are at the front of the living room (quite a large room due to being an awkward L-shape). The kitchen speaker would get most of the use - unfortunately an A9 or Edge is just too big and awkward for this space. I hadn't thought of this before but... the missus would need full use of the speakers too - she also would stream through an iPhone SE and I'd add her onto whichever Music Streaming Service I decide on. We also listen to radio a lot so Tunein would get some use (I've got the Tunein app on my iPhone). I *think* I also read some good Google reviews of a radio station within Apple Music - Beats 1?