If you think for like 20 secs you lose immediately
If you go to literally any other page you will probably lose immediately too
I think they just want you to lose no matter the situation, regardless if you are up 3 queens and your opponent is stalling, you'll lose
I've never had an issue. There is a first move timer and a max time on moves until move 10.
https://support.chess.com/article/338-how-does-game-abandonment-work
You should also keep the Live connection up and running. I mostly play on my mobile browser, so don't ever switch tabs, especially in blitz, so don't know for sure what happens there.
If you think for like 20 secs you lose immediately
If you go to literally any other page you will probably lose immediately too
I think they just want you to lose no matter the situation, regardless if you are up 3 queens and your opponent is stalling, you'll lose