Complex sentence: He is the former offensive coordinator for the Chicago Bears of the National Football League (NFL) and previously served as the interim head coach of the NFL's New Orleans Saints for the first six games of the 2012 season.
Split into simpler sentences: He is the former offensive coordinator for the Chicago Bears of the National Football League (NFL). Kromer served as the interim head coach of the NFL's New Orleans Saints for the first six games of the 2012 season.