This could just be a message from the network provider to let everyone know they're here and going through this too.
That being said, the one pic last night showed a 3377 on the screen as well, if that pic was real and it did show that number then it is in fact a Q post showing on the screen.
The odds shoot straight up if that number was really broadcast, so no coincidence.
I truly hope this was a test for when the white hats take over the air waves.