I am unsure what the grounds of the objection were. I am thinking relevancy but he could have been using it to lay a foundation.
I also think that Dr. Lee's name could harm the defense. Believe me, the last person I would want to be associated with my case is the "guy who got OJ off".
Well, he can't testify to everything the state may have done or the defense or who else was involved. He can only testify to what he knows. JB is trying to get in some reasonable doubt through the back door.
BTW, Bill Schaeffer thinks this is the best JB has ever done at cross thus far. he thinks he made some inroads.