GameShare is Nintendo’s term for the process by which you share games locally, either between two Switch 2 systems or with a Switch 2 as the host console streaming to an original Switch. “Sharing games” isn’t a particularly apt description, though, as it’s tied to multiplayer play only.

If you want to gab with your group while using your Nintendo Switch 2, you're going to need to get GameChat set up and ready to go. The Nintendo Switch's GameChat options were notoriously limited. However,

If you’re debating whether or not to pick up the new Nintendo Switch 2 Camera, we’ve got all the details you need to make up your mind.