Thanks for posting that Nix GIF. That GIF again PROVES that the man moving Up-The-Steps is wearing a WHITE SHIRT. He is NOT wearing a Brown Sweater and certainly NOT a sweater that extends down over his (R) arm. We can clearly see the Flesh Tone on his (R) Arm against that WHITE SHIRT. I believe this is why the Original Nix Film is MIA. That WHITE SHIRT does Not match the upper body attire of any of the 3 Men standing on The Steps in the Muchmore Film, and certainly Not the man pivoting on The Steps as the JFK Limo travels past him. The JFK Assassination Research Community should have discovered this ambiguity in the Nix Film many decades ago. But no, they instead focus all their attention on trying to find a Badge Man in the bushes, or a hat above the other side of the picket fence, or Oswald standing outside the TSBD when the JFK Limo passed by it, etc. All the while, glaring ambiguities like this WHITE SHIRT MAN are missed. And this glaring ambiguity does Not stand alone. There are others.