There were 3 plays there for the making and the 2 playmakers didn't make the play.
Kupp couldn't make a simple adjustment on a long touchdown pass and than dropped another touchdown pass in the endzone and Woods didn't come back for the ball on a long pass that would have been a big gain - would have resulted in either a catch or long pass interference call.
Make those 3 plays and all of a sudden Goff has 2 touchdowns and another 100 yards passing.
Woods to his credit, had 1 great play in the end zone though that offset his other play a little bit, but you are expecting these guys to always make plays not just some of the time, but all of the time.
I am the biggest fan of Kupp but frankly he laid an egg and it could cost the Rams a playoff berth down the road. Despite the 49ers playing a good game, that game was there for the taking by making those 3 plays.