Going to have to research this a little to fully grasp the concept. From the article it looks like they have 10-12 protected matchups. Michigan gets Ohio State and Michigan State every year. Some teams have no protected matchups, like Penn State. Every conference pairing will have a home and home every 4 years in this set up.
All I know is -- 2024 is going to be tough sledding for Michigan. They will have Ohio State, Texas and USC, to go along with whoever else is on the schedule. Not ideal when we lose 90% of our starters at the end of this year.