Instead of downloading partial game data DS styling, switch 2 game share streams from the host console using the same tech like Wii U’s gamepad. This means sharing with not waiting to download.

Some games are also in accordance with switch 1, though a switch 2 is required as host (certified on the main page of the feature). The game share can also be done online through game chat functionality.

It should have hereditary limits when it is using the same console hardware to stream. He states that the clubhouse games are able to show different views to each player, but this may be because the game is computual. In other examples, the same screen is shown on each device. Due to matters such as streaming lettuce, not every game will support this feature:

Interview links and feature description page are:
Nintendo Switch 2 – Game Share
Learn everything about the game share for the Nintendo Switch 2 System, a feature that lets you share sports with friends and family – even if they do not own the game.
www.nintendo.com