Sunday divisional round playoffs

I remember when people questioned Shanahan. That’s 2 NFC Championship games and 1 SB appearance now with Garoppolo and Brock Purdy at QB. Top 3 HC in the league.
I think they question, because he can't win the big game.

He wasn't the head coach,but he was the OC of the 28-3 game, he also Took an L to the chiefs. Another L to the rams. Good coach,good system, but can he win the big game?