Not even a super-high-speed westwards kangaroo hop across the fourth step could bring Reddish Shirt Man over to the Lovelady spot in time.
Mr. Lovelady simply cannot be Reddish Shirt Man.
The FULL Bell doorway footage is, more even than I had realized, an utter calamity for the eccentric chapter of
Team Keep LHO Off Them Steps known as
Team Make Coca-Cola Man into Lovelady:

Look how early we get our VERY first glimpse of Mr. Lovelady's shirt.
Note where Mrs. Kennedy is at this time:

At this VERY SAME time, Coca-Cola Man is STILL just where he was in Hughes: over behind the black man who is standing by the white west column:

We are no longer talking of a tiny window of time in which Coca-Cola Man can move over and be the Mr. Lovelady we see in Bell. No, we are talking ZERO TIME, for we are talking
simultaneity. Mr. Lovelady and Coca-Cola Man are, at this given moment, in
two different places.
Mr. Lovelady is not visible in Hughes because he is standing not far from the center railing, and is thus blocked from Hughes' view by young Ms. Toni Glover.
When the foliage clears in Bell, we see him still standing there, leaning over to his right and then returning to normal standing posture.
There is simply no logistical way to salvage the claim that Coca-Cola Man is Mr. Lovelady
