Regarding officiating, it was clear they were going to let them play up to a certain point, which makes for the best kind of game.
Michigan's DBs began to push the envelope as a result, and when they did, it was called - but it often didn't show up on the stat sheet. On UW's TD, a receiver was held and another receiver caught it, so UW declined the penalty. In the 2H, a Michigan DB very obviously grabbed a UW receiver and was called - but it was offset by an OL hold by UW, so penalties offset. There are 2 examples of Michigan getting called for interfering in the secondary and it doesn't show up anywhere.
Everyone has their favorite LOS holding call but, again, we're talking about a 3-TD walk. Moreover, once Michigan built a lead controlling the clock and the LOS, they started playing JJ Hero Ball to break it open. It didn't work. When they went back to vintage B10 football in the 4Q, they blew it open. They always could have blown it open. by returning to what worked in the 1Q and the 4Q. It was an illusion that it was close.