With Skype you could pop out a message and then choose "Always on top" which allowed using Skype with Remote desktop. So I cant use teams.
When using remote desktop, you can use Skype (with a microphone) by popping out the message and choosing (on the top left) "Always on top". The discussion then is on top during a remote desktop allowing voice discussions while in a remote desktop session. In Teams this feature seems to not be available. So I cannot use Teams.