MU and KU can't both be in the same region. Unless you think one of them would be picked after Baylor and ISU.
That's by rule, right?
Yes, first 3 teams from a conference must be in different regionals.
That's absolutely incorrect. There isn't a rule, the Big East had two teams meet in the round of 32 last year. The committee attempts to avoid having teams from the same conference meet before the regional semis. There are countless examples of teams from the same conference meeting in the regional finals including Pitt vs. Nova in 09.
I think you're misunderstanding him. He is saying the top 3 seeds from a conference have to be in different regionals. In '09, the top 3 of the big east wouldve been their 1 seeds Nova, Louisville, Uconn, all in different regions (obviously, since they were all 1s).