Could we maybe....
I got one 2 hours before the down time.
You got an on screen notification 2 hours ahead of the reboot? I have never seen anything but the 2 minute warning across the top of the screen. If they are appearing in the chat window, I can see how I might miss that, but I doubt I have missed every one of the on screen warnings.
Not disputing what you’re saying, I have just never seen anything other than the 2 minute one myself.