Durham’s investigation was intended to be just enough to placate people with a few truths but obscure the big picture and avoid punishing anyone more than a slap on the wrist for low level accomplices. It was a smoke screen with a few toss away revelations. He had the power to dig deeper and to bring charges against a lot of people, even with just what he did reveal. He chose not to.
Durham’s investigation bears a striking similarity to the Warren Commission. Not a coincidence.