Better than making AI generate a fake audio track.

I don't know what value is obtained by using a recording that isn't of the gunshots and using it to insert the sound of gunfire into the film. All it does is create a phony impression of when the shots were fired.

John, I'm guessing Z145 maybe?

You could be right given the view of JBC's left hand would be blocked if it is raised at the frame. His head is turned to his right as it is in the photo.

I wasn't fishing for confirmation of by belief that the first shot was fired at Z147 but if that slide was taken at Z145 and if Harold Norman was correct that the first shot was fired just as JFK was brushing his hair, it does fit. There's two "ifs" in that analysis so I'm not claiming it as proof of my belief, but it does provide some support. Given Norman's close proximity to Oswald, there would be almost no lag time between the shot being fired and Norman hearing that shot.

Well, i'll try and see if i can find the original source for it, Youtube doesn't provide lossless video for a good restoration

I feel like syncing them is useful because it atleast gives us sound, it's miles better than putting, well, i don't know, random stock sound effects.