Appreciate the discussion.
@jond Simaudio has a streaming app called Mind (Mind 2 being the latest version) which is built into the 390 and newer North series. The Mind app is available on IOS and Android. My listening to Qobuz was using IOS on IPhone to the Sim. My listening to Apple Music was using IPhone over Airplay (also built into the Sim).
Simaudio advised me Mind Qobuz > Airplay (Apple Music) > Bluetoooth. I did go deep into the apple settings at some point to use highest available resolution, though this may be down converted via airplay as Darko notes. Maybe my hearing is going from all the concerts but to me the difference between Mind Qobuz and Airplay was not night and day.