He may be holding off for something Barr has in the works. I doubt that Graham would call in anyone about to be deposed by the DOJ.
Then say so.
Tell the truth and while being interviewed by Tic-Toc Hannity admit that, "I will just have to wait until Barr and the DOJ are done with their investigations", or stay off the f*cken tube and quit telling America that you are going to start hearings next week, next month, maybe tomorrow , but rest assured I am on it .
He is a lying F*ck, pure plan and simple.