All you need to know is that Miami, UNC, FSU and Clemson are requesting to increase expansion to 22 teams and drop the requirement to go independent for 3 years.
The # 22 is because they do not trust that Notre Dame will not enter the discussion for joining the B1G if they see the ACC falling apart. Notre Dame’s preferred travel partner to the B1G is Stanford (although they have to change their library system to the B1G). That means Miami may need to be the 21st addition to the B1G with a travel partner, which is GT likely over Duke, with Clemson a slight chance. The SEC wants UNC, UVA, FSU and Clemson.
Also, the B1G wants to expand a **** of a lot more than the SEC does. The B1G wants to be in the SE so their interest in expanding to 22 forces the SEC to expand more.