Hi JK,
I myself have two Balances which use the same Mozart platform as the Level and while I don’t use Spotify a few months ago B&O released a big Spotify Connect update so I think it should be supported on the Level now. I’d say it should work in stereo even if the B&O website doesn’t mention it specifically here other than that the Level supports Spotify Connect:
https://support.bang-olufsen.com/hc/en-us/articles/4418029319825-Does-Beosound-Level-support-Spotify-Connect-
John from B&O Manchester gave an update on the latest way to stereo-pair Mozart products here so that I know from my Balance works with the Level:
https://youtu.be/JkburfkgC7o
B&O Manchester also sums up the other recent big software update that enables Beolink multiroom as well:
https://youtu.be/K97lFWzq4yw
So I think it is very likely that you can now do all those things.
Anybody that can confirm?