Thank you for bringing these egregious calls to the attention of the Zone (and hopefully the NFL!!)... Just disgraceful... I was most disappointed in the commentators for not bringing these non-calls up, particularly the one on the kickoff return, which to me, was the absolute game-breaker. You didn't even mention the offensive pass interference non-call when Culliver was about to make a pick the Raven's receiver mugged him. That ended up costing the Niners a TD...
Now, all of that said, the Niners made a boatload of mistakes and all of those were very costly. They didn't really play well. However, the Ravens also made a bunch of mistakes and they just got their asses handed to them in the second half.
I'm just saying if the Niners get just 2 of the calls you mentioned...the one on the kickoff return (obvious) and the off-sides on the 2-point conversion (also obvious), it is an entirely different game...and one the Niners probably win.