Hi John, if the Apple TV is finding them on the network, than they’re AirPlay 2 capable speakers. The Sonos speakers that can’t use AirPlay wouldn’t even show up there.

If it’s failing to connect, I’d be looking at network connections or some settings that could be getting in the way.

Do you have an iPhone? If so, are you able to use AirPlay 2 to play to those speakers from it? That would let you know if AirPlay 2 works fine on the network, and then you can narrow things down to what’s getting in between the Apple TV and your Sonos speakers.

This page here has all the AirPlay needed steps for Sonos, which you’re probably already doing, but it’s worth a read.

Thanks for the reply.

I also contacted Apple.

They suggested something similar, ensuring the Apple TV was transmitting to and connecting via AirPlay to another device ok. ( It was)

Then they suggested rebooting the router, as that was what would be doing all the ‘hard work’.

Rebooting the router seemed to fix it as they are connecting now.

cheers

Great! Glad it was something simple. Let us know if we can help with anything else!