AF1. Fly it like you stole it
Probably opted to forgo the Call-sign to avoid any confusion that might arise. If they went with AF1 people would question who has access to the the that call-sign until Biden gets around to flying somewhere.
Probably because households are viciously split on this and they don't need kids parroting their parents sentiments in the classroom.
Trump needs to go on a 3 day bender live casted. The liquor never lies and I'd like some answers.