Watching Robinson and the Wolverines offense go up and down the field last week against Connecticut also served as motivation for Van Bergen and the defense.
"Definitely feel like we're strides behind the offense in getting everything down," Van Bergen told ESPN.com this week. "We had some glimpses Saturday, and I think we'll be able to seal some things up and hopefully keep improving.
"We'll get to that level eventually."
Led by Robinson's record-setting performance, the Michigan offense overshadowed a pretty solid defensive effort against Connecticut.
The Wolverines allowed only one touchdown and held UConn scoreless in the second half. Take away a juggling 47-yard reception by Michael Smith, and Connecticut had only 296 yards in the game.
To be fair, the Huskies missed several opportunities to attack Michigan's young secondary, particularly in the first half. Connecticut had its moments, but so did Michigan's defense, none bigger than J.T. Floyd's forced fumble and Obi Ezeh's recovery near the Wolverines' goal line late in the third quarter.
"We're certainly still a work in progress, but I was really pleased to be able to limit UConn to 10 points," coach Rich Rodriguez said. "We played pretty well assignment-wise, we tackled pretty solidly. We gave up a couple big plays, but we also made a couple big plays defensively."
And the defense could have made more.
"We had two interceptions hit guys right in the hands," Van Bergen said. "There were some plays Saturday that if we sealed up, our numbers on defense would have spoken even bigger."
The challenge for Michigan's defense should get tougher Saturday at Notre Dame (NBC, 3:30 p.m. ET). Although Michigan beat the Irish last year 38-34, the defense had little to do with it.
Jimmy Clausen, Golden Tate, Michael Floyd and Armando Allen pretty much had their way with Michigan, piling up 490 yards and 27 first downs.
Clausen and Tate are gone to the NFL, but Floyd and Allen are back, along with tight end Kyle Rudolph, one of the frontrunners for the Mackey Award. They're operating in a new spread offense under first-year coach Brian Kelly, and a new quarterback, Dayne Crist, will be calling the signals.
"I would call this team significantly different," Van Bergen said. "Notre Dame did a lot more drop-back, seven-man protection for Clausen with two guys in routes. This is a bit more of a spread attack, using more receivers.
"They have a developed quick game, and it’s something we’ll have to prepare for."
Both Van Bergen and Rodriguez identified tackling as an area Michigan must improve after Week 1. With so many young players, especially in the secondary, Michigan allowed "some leaky yardage," Van Bergen said.
That can't happen against Notre Dame, which operates at a rapid pace and makes it tough to reach Crist.
"They like to up-tempo you," Rodriguez said. "They’re going to put it out in space, whether it's to their tight end or their backs or their receivers, and we've got to get them on the ground quickly. Because if not, they'll go up and down the field on you.
"We had a hard time stopping them last year, and even though it's a different scheme, this scheme may be even more difficult to stop."
One way to do it is control the line of scrimmage. Michigan failed to record a sack last week, but end-linebacker Craig Roh and others applied pressure to quarterback Zach Frazer.
Notre Dame's offensive line is supposedly better, but Michigan boasts more experience up front with Van Bergen, Mike Martin and others.
"Having our experience won't hurt us," Van Bergen said, "and their youth, they might be more inclined to get frustrated if things start not going their way. It'll be interesting to see how that develops."