I believe there is good synergy with the films as per OP. That doesn't mean there wasn't major editing within each one, removal of frames or scenes which you were not meant to see. I have looked at the Zapruder film as the base film and then tried to see how the others match it. They all seem to correlate well on the timeline IMHO. What I find interesting is what each shows that the other doesn't when you combine the details.
No one captures any frontal limo shots. We do see the ducking reaction of Bill Ready at about Z329 and also the girl (afro hair cut) running on the lawn changing direction at about that same instant. We also never see the position of the lead car - only ever see it waiting in the safety of the triple overpass. it remains there and allows the limousine to pass it on the way to the hospital. It was never captured in the Zapruder film either. As it was after the motorcycles at film beginning, it certainly should have been the cue to have Zapruder turn his camera on. For some reason, this car never captured on film or video!
Bill Ready's reaction would indicate he saw something more than what he testified and that it was in front of him - not behind.
http://mcadams.posc.mu.edu/russ/m_j_russ/Sa-ready.htm"I was about 25-30 feet from President Kennedy who was located in the right rear seat. I heard what appeared to be fire crackers going off from my position. I immediately turned to my right rear trying to locate the source but was not able to determine the exact location.
At this time the U.S. Secret Service follow-up car seemed to slow and I heard someone from inside this car say: ''he's shot". I left the follow-up car in the direction of the President's car but was recalled by ATSAIC Emory Roberts (Secret Service) as the cars increased their speeds. I got back on the car and seated myself beside Mr. Roberts in the right front seat. The cars proceeded to the hospital several miles distance."He was never interviewed by Warren Commission - only gave a statement. Film shows he saw something happen - he ducked. It was never evident that he looked behind him as he watched the assassination. Again, ducking movement which could imply a frontal assault that he saw unfold, grassy knoll or otherwise. This does not support LNer theory though!
Also interesting synergy with the afro girl who in the Nix Film, changes direction to move sideways away from limousine position at that same time. There is good synergy in Zapruder Film in the "cogs". I don't think she was ever interviewed but she would have an interesting aspect to share. Jean Hill and Mary Moorman were stationary during the entire filming and showed no visible reaction.
The other man that had a very complex reaction was the man labelled as Malcom Summers. He never turned up for 25 years for TV interview but did make a bit of a statement. He was noncommittal during a lengthy interview 25 years later as to where he actually was. He didn't want to say he was on the "island" (area between Elm Street and Main Street) and he avoided answering that during the interview. If he was the man rolling into the grass, he surely must have been a key witness and saw something to give a reaction like that. His testimony on that day is unclear and was deemed unimportant. He said he heard two shots but saw nothing - he may have been 15 feet away, closer than even Altgens! However, this man rolling and then crawling in the grass was the biggest action character in the film other than Clint Hill and Jacqueline. (No one else ducked or flinched!)
http://mcadams.posc.mu.edu/russ/testimony/summers.htm"Yesterday, November 23, 1963, I was standing on the terrace of the small park on Elm Street to watch the President's motorcade..... Then all of the people started running up the terrace[/i] away from the President's car and I got up and started running also, not realizing what had happened...."[/b]
Was the terrace the island or the grassy knoll? Also, why would you mess up the date as being November 23 and not November 22? I guess these little details are not important when taking statements! A little white lie there possibly to protect you by entering in the wrong date.
Real Conspiracy? You merely have to mention the fact that LHO, the LNer was a highly qualified assassin and decided to mix his cartridge loads. One bullet was frangible and the other was hardcore that is fact. That evidence in and of itself is enough proof that it had to be more than one shooter.
Can you imagine LHO making the decision......? "Well,.... I think I will put the hard core bullet in the clip first, then I will follow that up with a frangible, then another frangible, no wait let me think about that, I will load 2 hard bullets in and then the frangible. Yes, that is it. It will allow me to adjust for wind in case I miss the car altogether. I think I will only have 3 bullets in the clip, that should be enough! I wonder if there could be someone to help me spot? If only they would slow the car down for me. Yes, three mixed bullets will be perfect. Maybe I should just randomize them and if they hit they hit!!!!"
Ridiculous arguments don't you think?