Yes, everyone seems to agree, Nixon didn’t know about the break-in. However, he made a lot of mistakes after the break-in came to light.
I bet LBJ had Nixon beat, but of course LBJ was friends with J. Edger Hoover, so the FBI was going to cover his rear.
Jedgar was an addled cross-dresser by that time.
Research the relationship btwx LBJ and Bush41.