Watch from 0.50 minutes, call between LBJ and Hoover. The first “investigation” of Hoover was something completely different than the later single bullet theory. A complete bullet rolled out of the President’s head?
Note the date on this document: 11/22/1963. See Hoover’s handwriting: “Not necessary to cover as true subject located.” This is before any investigation had started and before Lee Oswald had been charged with a crime.
“The individual is handicapped by coming face-to-face with a conspiracy so monstrous he cannot believe it exists.” J. Edgar Hoover