Lea announced the hirings Tuesday.
Blazek spent the past two years at North Dakota State, where his offensive line helped set a school record with 4,601 yards rushing while winning the 2019 FCS national title. He was offensive line coach at Rutgers between 2016-18 and was the line coach and run game coordinator for Western Illinois from 2013-15.
Blazek coached the offensive line and tight ends at Winona State between 2009-12 and was co-offensive coordinator his final three seasons. He was offensive coordinator and offensive line coach at Fort Hays State between 2005-08. He started coaching at his alma mater, Iowa, from 2001-04.
Egorugwu was defensive quality control coach and assistant linebackers coach with the Bills the past four seasons. He was a staff assistant with the Baltimore Ravens in 2015 and 2016, working mostly with linebackers.
He started coaching at his alma mater, William Jewell, working with linebackers in 2010 and 2011. He was a graduate assistant at Missouri working with the defense in 2012 and offense in 2013 and 2014. He was wide receivers coach in 2015 at Missouri State.