Gentlemen,
A couple of points to ponder here:
1. At Z313 of the Zapruder film, President Kennedy suffers his most serious wound, it?s violent impact forcing his body to the ?Back and to the Left?; to the ?Back and to the Left?; to the "Back and to the Left??
2. At this very same instance, photographer Dave Weigman, a cameraman for NBC, travelling in the 6th car behind President Kennedy?s limousine, is pointing his camera at the doorway/front entrance of the Texas School Book Depository. This small but important detail is essentially important to establish a genuine timeline of the unfolding events, thus remember Mr. Weigman (Dave) snaps his image at the same sequence w/Z313.
3. In his continued panning of the front entrance, before he jumps out of his press car and runs further down Elm Street, he captures Doorway Man (Lovelady). He also captures a figure standing BEHIND Lovelady in the shadows there ---->
https://jfkact.org/f/z313-mr-weigman
*Note: Weigman (Dave) snaps this at the same sequence [/u]w/Z313
4. In this same time sequence, we know Sarah Stanton is not this figure standing there behind Lovelady, because the historical record tells us precisely where she was at this specific moment in time & with whom ---->
FBI statement of Mrs. Robert E. Sanders, Sr Clerk Accountant
"At approximately 12 :20 PM on November 22, 1963, I left the lunchroom on the second floor of
the building and went out the front entrance to await the arrival of the Presidential Motorcade
which I knew was due to pass the Depository building at about 12 :30 PM. I took up a position at
the top of the front steps of the Depository building facing Elm Street. To the best of my
recollection I was standing on the top step at the east end of the entrance."
"I recall that while standing there I noticed Mrs. Sarah Stanton standing next to me, but I am
unsure as to the others. Mrs. Stanton is likewise an employee of the Texas School Book
Depository."
"To the best of my recollection I did not see Lee Harvey Oswald at any time on November 22, 1963,
and although I knew him by sight as an employee of the building I did not know him by name and
had never spoken to him at any time."
"I have read this and the two preceding pages of this statement, initialed each page and each
correction and find it true and correct to the best of my knowledge."
5. Since no one is capable of being in two places all at once, Mrs. Stanton?s position way over on the east side of the entrance w/Mrs. Sanders rules her out as the figure behind Lovelady, who stands there on the polar opposite end of the front entrance. Please note, Mr. Weigman?s image was captured while the figure behind Lovelady was in that specific location, while at the same time Mrs. Stanton was specifically elsewhere in a different location w/Mrs, Sanders.
Good day, gentlemen. Back in the Fall when the leaves are blooming in full brilliant colours.
Hi Adam! I like your surname
You're quite right, of course-----------Sarah Stanton was never a serious candidate for Prayer Man, nor (obviously) is Pauline Sanders. Besides, it's not a woman. A sharp eye will detect a male receding hairline and side part of the hair. As for male candidates other than one Lee Harvey Oswald?
There ain't none!! 
Now! The key visual relationship here is that between
LHO in Wiegman and
LHO in Darnell.
Look how close his right elbow is to the
redbrick section of the wall in Wiegman when he does NOT have
OBJECT X raised to his mouth! (Note: we can get a sense of the full length of that right elbow by looking at the length of his LEFT elbow):
We have already established that Billy Lovelady is one step down from the landing, and then two steps down:
The closeness of LHO's right elbow to the redbrick section in Wiegman puts HIM one step down from the landing.
And in Darnell? Well, LHO is still one step down, BUT his posture has changed. He has his arms folded, which raises his right elbow and raises his left elbow up to his body too. What the eye is TRICKED into seeing as his left elbow in Darnell is NOT his left elbow---------it is something (as yet unidentified) BEHIND LHO!
The folded arms:
His left elbow APPEARS to be the only part of his body catching direct sunlight.
This difference in posture-------and NOT the slight change in perspective from Wiegman to Darnell-------explains why the gap between right elbow and redbrick section is so much larger in Darnell than in Wiegman.
The job NOW is to work out what the heck that light object behind LHO in Darnell-----i.e. his 'left elbow
-------really is! Then the thing is, to coin a phrase,
cinched 
