Hearing about how several SF players literally didn't know the new playoff overtime rules is insane. Like how does the entire coaching staff forget to plan/prep for that possibility with a full 2 weeks off between the NFCCG and the SB
You answered your own question. The actual football rules are the same. I wouldn't want the players worrying about knowing any nuance of scoring / possession for an overtime circumstance which arises with a low probability. That's on the coaches. Are you asserting the coaches were unaware of the overtime rules?
After the Bills / Chiefs playoff game (Gabe Davis 4 TD, >200 yards, 0:13 seconds, KC OT win - however you want to describe that game) which changed the overtime rules for the playoffs, they are now aligned with the regular season OT rules, with the exception the game clock will not stop at 0:00 and play continues if the game is still tied.
1. Each team will be allowed to possess the ball.
2. Any defensive score wins the game.
3. The game continues until a tie is broken with both teams having possessed the ball. (i.e., unlike regular season, the game does not end after 10:00 min - which used to be 15 min.)
It's not hard. Get "touchdown" "field goal" and all that other stuff out of your head.