Just to inject a bit of honesty into this thread.
Shelley's affidavit and his WC testimony completely contradict each other.
The sequence of events described in his affidavit is as follows:
1] On front steps when he hears shots
2] Heads to the concrete spur (on his own) where he meets Gloria.
3] Returns to the TSBD
4] Re-enters the building
The sequence of events described in his WC testimony is as follows:
1] On front steps when he hears shots
2] Waits on steps for about 3 minutes before Gloria arrives at steps
3] Both he and Lovelady then head over to the concrete spur.
4] He turns and sees Baker and Truly still outside the building.
5] Heads down Elm Street extension to the railroad yard, hangs around there for a while, re-enters building through west door (none of which is mentioned in his affidavit).
The main problem for young Thomas is Lovelady.
In his WC testimony Lovelady heads across to the spur AFTER interacting with Gloria on the steps (in his affidavit he never even leaves the steps before re-entering the building).
It is impossible for the two figures on Elm Street to be Shelley and Lovelady if this is the case.
There is simply no time as Gloria had just arrived at the steps in Darnell.
There is no way around this for young Thomas.
However, if we accept the affidavits of Shelley and Lovelady, and that Lovelady was still on the steps when Gloria came up and told him about the shooting, it is clear that Darnell is showing the moment Gloria arrives at the steps. The man she is talking to on the steps is Lovelady (who is stood in exactly the same position on the steps he was as the motorcade passed by).
There is nothing contradicting this identification.
Big/tall, 20-year-old, dark-blue-skirt-wearing / dark-blue-headscarf-wearing / lighter-colored-plaid-skirt-wearing Gloria Calvery and her three headscarf-wearing work colleagues were standing shoulder-to-shoulder about 40 yards from the "island" during the motorcade.
Calvery can be seen standing on or going up the TSBD steps next to her dressed-in-all-white colleague, Karan Hicks, 25-30 seconds after the final shot in the Couch-Darnell clip.
A guy who looks like William Shelley and a guy who looks like Billy Lovelady can be seen walking/running down Elm Street Extension towards the railway yard / parking lot 25-30 seconds after the final shot in the Couch-Darnell clip.
The Shelley figure is slender, wearing a suit, and has a "pompadour" hair style. The Lovelady figure has a "male pattern" bald spot and is wearing a dark-colored long-sleeve shirt that has bold black and white horizontal and vertical lines.
Calvery's and Hicks' colleague, Carol Reed (who is wearing a black skirt, a white blouse, and a red headscarf in the Zapruder film, and who has told researcher Brian Doyle that she remembers running after the assassination), can be seen running past the Shelley and Lovelady figures, on her way to the TSBD 25-30 seconds after the final shot in the Couch-Darnell clip.
Police officer Marion Baker can be seen running towards the TSBD front steps, and Roy Truly, standing in front of the steps, can be seen watching Baker run past him 25-30 seconds after the final shot in the Couch-Darnell clip.
Shelley and Lovelady, due to poor memories and/or for sinister reasons, were "all over the place" (pardon the pun) in their affidavits and testimonies, but if we combine what we see in Couch-Darnell with certain statements in their affidavits and testimonies, we can create a plausible narrative which says:
Shelley (and Lovelady?) intercepted a crying Calvery and Hicks at the "island" about ten seconds after the final shot, Calvery (and Hicks?) told Shelley (and Lovelady?) there that JFK had been shot, Shelley and Lovelady started walking towards the railway yard / parking lot, Calvery and Hicks continued on their way to the TSBD steps (where Buell Wesley Frazier said he heard her bellow out that JFK had been shot), Shelley and Lovelady sped up when Carol Reed ran past them and verbally confirmed that JFK had been shot, and Shelley and Lovelady, after staying at the railway yard / parking lot for a minute or so, came back to the TSBD and entered it through a rear door, near which rear door just-arrived-from-the-fourth-floor Vicki Adams and/or Sandra Styles may (or may not) have seen Shelley and/or Lovelady on the first floor in the rear part of the building.
. . . . . . .
Caveat:
I don't subscribe to the "Prayer Man" theory, but Greg Parker's website has some good images of Lovelady and Shelley showing how they closely resemble the Shelley and Lovelady figures who are walking/running towards the railway yard / parking lot 25-30 seconds after the final shot in Couch-Darnell.
http://www.prayer-man.com/tsbd/billy-nolan-lovelady/