I recall lots of fans saying the San Fran OL was holding and no calls. I only saw one that was blatent but that was because I was actually looking for holding and not following the runner.
Choke hold on a Patriot DL as the RB went thru the hole. No Call.
That wasn't the reason the Pats lost. They only played decent football for the second half.
Rather have this type game before the playoffs than while in the playoffs. Plenty of time to correct things.
Gronk was missed for both his blocking and catching.