Looks like Nebraska and Frost specifically got into a bit of trouble related to too many coaches in a meeting. 

https://thespun.com/more/top-stories/breaking-ncaa-announces-punishment-...

From the Article:

Here is the full punishment:

A one-year extension to the current probationary period (through April 2023).
A $10,000 fine.
A one-year show-cause order for the football head coach, plus a five-day suspension from all coaching duties during the championship segment of the 2022 football season.
A reduction of the number of football countable coaches by one for two days of practice during the spring 2022 season.
All noncoaching staff members will be removed from practice and competition for five consecutive days during the championship segment of the 2022 season.