I was in a computer club in High School. So we were able to play a few games in the computer lab after school. The teacher that headed it absolutely loved playing Descent, but she was also so bad at it that it was pure blind luck if she ever actually hit anyone.

Your primary Switch shouldn’t need to do that, and it also would have done it if you didn’t get the DLC. It is dumb that it basically requires internet access for all your additional Switches to operate, and it actually promotes you marking your travel switch as the primary device while the actual primary device sits at home where you always have internet access.