I sometimes use the headphones simultaneously with my Android mobile (Spotify) and my Windows laptop (Teams). Simultaneous connection works without any problems.
I am not aware of switching between the devices via app or headphones. I also couldn't find any profiles or possible button assignments on the inears.
When I'm listening to music and receive a call, I stop the music (via headphones) and answer the Teams call via my laptop. It works.
Hope that answers your question.