[lmz]

Tilde dot is the disconnect sequence for SSH. Other characters after tilde have other uses as seen in the post.

[raffraffraff]

And if you're N connections, use multiple tildes, depending on how many levels you want to disconnect. I think.

It's amazing how switching jobs to one where you just write terraform and yaml all day gets your terminal skills all rusty.

[maratc]

There's a song about it, it's called "Ctrl up-arrow Q".