The Niners really ran into some bad breaks. The punt of the guys heel is just bad luck, then you have arguably one of the best LB in the entire sport tear his Achilles RUNNING ONTO THE GD FIELD. Kelce had done next to nothing up to that point. Then Kittle gets nicked up. They should have blocked Butker's FG (look at the replay, I literally have no idea how they didn't) and get an extra pt of their own blocked.
You do all that with Mahomes on the other side and it is really, really hard to win, yet it was a really close game. The two things that annoyed me the most were not one holding call on anyone blocking Bosa (seriously, look back at some of those "blocks") and Shannahan not calling timeout before that last pass. To me, there was no reason not to call one.
I hate the Chiefs, but you have to admit they know how to win, just like that dancing giraffe Tom Brady and the Patriots. It's annoying.