Thanks for posting that extremely new Doug Horne presentation. The new photos of the different ambulances at the Bethesda Morgue show that there is more JFK Assassination evidence out there. Horne used a lot of the Lifton evidence, but Horne like Lifton is still unable to address specifically WHEN/WHERE the JFK Body was removed from the ceremonial casket and then placed inside the cheap shipping casket. This has been "The $64,000 Question" for decades.
Even if we are inclined to think JFK's body wasn't placed in a shipping casket, it's bizarre that there isn't a clear, unequivocal explanation of who was in the shipping casket and why those who insisted it was JFK had this belief. Alternatively, if he was placed in a shipping casket for transport/handling purposes, why isn't there a clear, unequivocal explanation of that. These genuine mysteries do fuel endless speculation.
I believe that a BIG part of the problem, on 11-22 and long after (including at the WC) was the over-concern about "protecting" the Kennedy family and JFK's image at the expense of historical truth. Given all that we now know about Joe Sr., JFK and Jackie, the fantasy was scarcely worth protecting. As far as the JFKA is concerned, they should have taken Jackie and Bobby out of the loop immediately.