I only recently bought my first B&O gear, a Beosound Theatre and 4x Beolab 18s. Overall I'm very very happy with the Sound Quality.
I now have a question regarding using the above setup in combination with Apple Music. Apple Music offers Lossless, Dolby Atmos and High res music. Where I of course can use Airplay to stream to the Theatre, this only allow a 2 channel music stream which is afaik resampled to Airplay 48 kHz (not bit-perfect lossless).
I also own an Apple TV 4K, when using the Apple TV to play Apple Music over HDMI, the Lossless tracks are received by the Theatre in their bit-perfect lossless format (checked in B&O App incoming signal info). Additionally, the AppleTV allow the Music Files available in Dolby Atmos format to be streamed multi-channel to the Theatre (using a Music preset in "Direct" mode instead of TrueImage.).
Now coming to my question: All in all the sound if really good using the above setup but to be able to use the AppleTV as main source to play Apple Music, I need to select the HDMI connection which is only available as a "Video" source and not as an "Audio". This means that whenever I want to play music via the AppleTV, the screen will automatically be turned On. Is there any way to avoid this? can an HDMI connection be used for Audio only?