Split Fiction on switch 2 and switch 1

Hi.

I have Split Fiction installed on my Nintendo Switch 2. It is said that you can play it with another user on switch the switch 1 using game share. But when I try that I get the same split screen on both the consoles. Am I doing something wrong? I was expecting there to be no split screen and the two consoles have different screens for the 2 players. Is this not possible with the game share option?