You could have avoided the worry completely. Ssh goes over tcp that does transport control (literally the “tc” in “tcp”) and this includes retransmission in case of packet loss.

If you are on a high latency ssh connection and your password does not register, you most likely mistyped it.

I am aware of that but you forgot the other conditions. Keys sometimes don't register, I'm not sure why but I do experience missing keystrokes.

The passwords get updated irregularly with the org IAM so you aren't sure what the password even is. Pasting doesn't work reliably sometimes, if you're on windows you need to right click to paste in terminals, sometimes a shortcut works. Neither gives me any feedback as to what event was ever registered though.