Complex sentence: The objective of the segment was to find the "new" Titletown USA, a name already used and trademarked by the city of Green Bay, Wisconsin, much like how Sports Illustrated attempted to rename Hockeytown (a name used by Detroit, Michigan).
Split into simpler sentences: The objective of the segment was to find the "new" Titletown USA, a name already used and trademarked by the city of Green Bay, Wisconsin. It's similar to when Sports Illustrated attempted to rename Hockeytown (a name used by Detroit, Michigan).