[giancarlostoro]

You've never been on one computer with another developer and eventually just hand them the keyboard? (or Vice-Versa) Or on a work call sharing your screen, where you give them remote control of your screen? (or vice-versa) This is a way to let someone else collaborate with you, within their configured IDE, with their preferred plugins and tooling configuration.

If you don't do any peer programming, then you wouldn't understand it.