Moeller came to the Bears in February replacing the departed Dale Lindsey, who became the Chargers defensive coordinator.
Although, Dick Jauron or Greg Blache didn't know Moeller his reputation proceeds him. He has experience on the college and pro level as a coordinator and as a head coach including guiding the Lions to a 4-3 mark after taking over for Bobby Ross at the end of the 2000 season.
Jauron said he was surprised that someone with Moeller's expertise was available.
"I think he'll bring a lot to us in terms of experience," Jauron said. "He's worked on both sides of the ball and he's coached on both sides of the ball at the highest level at the University of Michigan."
Blache said defensive quality control Chuck Bullough was in line to replace Lindsey, unless the Bears found a "homerun hitter". Moeller fit Blache's description.
"I've heard Gary Moeller stories since 1970. He's a lot like Dale Lindsey. He's been a coach, he's been a coordinator, and he's been in the NFC Central division in the past. He knows Green Bay he knows Minnesota and he definitely knows Detroit.
"He's going to be a big help to me personally when it comes to the game plan and a big help on Sunday afternoon when the game starts."