And that's great but you're still mistaken. There are a few ways acts are pulling this off:

1) All the members are playing at the same time aka a clusterfudge nightmare for national tv

2) Tracks recorded separately, sent to the next person and so forth (ie how they recorded It's My Life acoustic)

3) Tracks recorded separately and then mimed to (pretty sure Hugh did this for It's My Life. Fingers don't match up and not confident the bass was even plugged in). A very good chance other members did the same.

The major point being....streaming has zero to do with it because none of this is live. It's all edited ahead of time and broadcasted AFTER the fact. This has become one of those things where I don't even care anymore but just wish people would stop debating completely different points.