Firstly, this version of Bell is FAR superior to the one I was using and will be far more helpful, so thanks for that.
I'd like to go slowly to piece together my thinking here. The first thing I'd like to clear up is your comment in an earlier post that in the Bell film Weigman can be seen walking towards Zapruder. As far as I can tell this is not correct but I might be misunderstanding something so I'd like to clear it up. It's not a 'gotcha' or anything, just a genuine attempt to work this timeline out.

In the Bell film we see the limo enter the underpass followed by 3 cars. The camera then quickly pans to the right and shows us the GK area, where we see Zapruder and Sitzman making their way from the plinth and, as it pans across, Weigman in a prone position from where he was filming the Hesters:



This is the moment just before there is a cut/jump in the film.
We can see Weigman lying on the steps. He has just finished filming the Hesters (Mr Hester can be just about made out in the shadows of the pergola, Mrs Hester is getting up from her prone position). Weigman turns around and starts to get up. In the bottom left corner we can see Hargis stood by the lamp post.

The film then cuts/jumps to the scene below. There is no way to tell how much time has passed but a few things have changed - Altgens has appeared out of nowhere, Weigman is now filming the Newmans and Hargis is now running across the road:



Do you agree that the Bell film does NOT show Wegman walking towards Zapruder?
Do you agree there is no way to tell, just by watching the Bell film, how much time has passed between these two images because of the cut/jump?
Do you agree that Weigman has moved from his position filming the Hesters to his position filming the Newmans?

Again, no 'gotchas', just honest questions.
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                                                                           ALTGENS 8  VS  THE WIEGMAN FILM

       On "Altgens 8",  we are told that we are seeing the backs of Zapruder and Sitzman having just gotten down from the pedestal. They are standing on the cement just to the (E) of this same pedestal. In the background, we see BOTH of the Hesters flat on the ground, close to the Pergola. Per Trask's "Pictures Of The Pain", "Altgens 8" was taken from the (S) side of Elm St. It was taken Immediately after Altgens took the photo of the rear of the JFK Limo as it raced toward the Triple Underpass. (Time Stamp)
       On a good copy of  the "Wiegman Film", there are 2-3 clear frames showing this very Same Pedestal and the cement just to the (E) of this Pedestal. There is also a frame clearly showing the inside of the Shelter behind this same pedestal. These frames were taken BEFORE Wiegman filmed Both Hesters laying on the ground, and Mr Hester then getting up and moving to the Pergola behind them. These 2-3 Wiegman Film frames showing the pedestal and the cement to the (E) of the pedestal, do Not show Zapruder. They also do Not show Sitzman. And the Wiegman Film frame clearly showing the inside of the Pergola Shelter behind the pedestal, shows the Shelter to be empty.
        How is it that these 2-3 Wiegman Film still frames of the pedestal area do Not show any trace of Zapruder and Sitzman? Along with the shelter behind the pedestal being filmed empty? Zapruder and Sitzman are Not inside the shelter. This completely changes the currently accepted time lines of these images and the people captured within them. Wiegman got out of Camera Car #1 LATER than we were led to believe, and he then filmed the JFK Limo going under the Triple Underpass LATER than we were led to believe. The same goes for the Darnell Film footage of Officer Baker running toward the TSBD. That currently accepted :20 second time line is Wrong. ALL of these images were incorrectly time lined in order to corroborate each other. The now much clearer JFK Assassination Images, also being readily examined/viewed online, is exposing this chicanery.         

MTG's long winded posts seem to follow the adage, "If you can't dazzle them with brilliance, baffle them with  B:"

He seems to try to bore people into not responding to him. Often, that works.

   Funny that you would mention the "1st down line on the screen". That "line" is also Not, "Dead on balls accurate". Just like the game clock.
   And do Not get me started on the actual "spotting" of the football. That is "putzed" up very often. Sometimes on purpose. This was made obvious with this repeatedly being done in favor of the KC Chiefs during the NFL Playoffs.