We have access to three Switches in the house but just one copy of the game. But I still see no option to link multiple Switches in-game other than in Kung Foot.
The back of the case clearly says 4 player local co-op and on the bottom you can see it's 1-4 in TV and tabletop modes but just 1 player in handheld (and naturally for multiplayer Murphy you will need two Switches as one Switch will have your hand obstructing the screen)
This icon on the top right only comes up in Kung Foot Tournament:
So from my observations so far:
- Despite adding a way to connect locally
- Despite already programming multilayer Murphy in the Vita version
- Despite going through the effort of letting us use Murphy in single player
There is no way to use touch screen Murphy in multiplayer. I really hope I'm missing something.