1/ MS Teams on Linux when connecting to a meeting (voice only, don't have a webcam) it gives the disconnect sound from Skype for some reason.
2/ win10 tend to play the volume louder than linux. A good level in win10 is about 12 on my DAC, but on linux I have to go to 14-15, with the volume near to the max on the player (browser, vlc, foobar2000 etc) where on win10 I don't need to go near max to have the same level in headphone or speakers.