At this point, there seems to be only 4 viable reasons to consider the theory that Oswald was on the TSBD steps at the time of the shots.
1. The Hosty notes of one interrogation session of Oswald when FBI agent Hosty was present, notes which were not presented to the WC, nor to the HSCA or the AARB. FBI agent Hosty chose apparently to wait some 50 + years later to reveal the notes.
2. Oswald’s description of seeing Norman and Jarman while Oswald was in the Domino room, while N/J conversely never saw Oswald while they were in the Domino room 12:00-12:10.
3. The horizontal length of blur of red that is seen at the front entrance steps of the TSBD in a couple of GIF versions of Towner film that appears to be of such extended length that it is improbable to be just single persons red shirt.
4. The “Red Shirt Man” in the GiF of Hughes film (thought to be Billy Lovelady) lifting up what in all probability is a bottle of coke to his mouth. His shirt appears more of a solid reddish brown rather than a red and black checker board square pattern shirt as Lovelady was wearing.
To discount no.1 , requires believing that FBI agent Hosty fabricated the notes 50 years later and/or that Oswald completely lied about going outside , which theoretically could easily have be refuted. Therefore, either Oswald was an idiot or Oswald really went outside and thought that some employee would verify seeing him on the front steps.
To discount no. 2, requires believing that Oswald randomly chose 2 employees and told Will Fritz he ate lunch with them, which could only be from 12:00 to 12:15 , which provides NO alibi for Oswald at 12:30. So why would Oswald ID Norman and Jarman? Either Oswald was an idiot OR Oswald saw N&J at about 12:25 as they were returning via the back loading dock door and as they passed by the Domino room. This sighting would be a logical reason for Oswald to ID the men as he more likely would have considered this to be a potential alibi. Oswald saw N&J but they did not see him, because they probably were facing towards the direction of the freight elevators as they entered the rear loading dock door.
To discount no. 3, the horizontal line of red that extends beyond the width of just one persons shirt, must be either motion blur from the camera or there’s a 2nd person with red shirt to the right side who is not accounted for.
To discount no.4, the Red shirt man (RSM) must be Lovelady who although having bought his coke BEFORE 12:00 , nevertheless had not consumed all of it 30 minutes later and he was taking another drink in the Hughes film GIF. The reddish brown solid tone must be the Hughes camera film or GIF version of video , meshing together red and black squares of Loveladys shirt.
Note to no.4: Oswald most likely did not buy his coke until 12:15- 12:17 which would be when he was seen by Carolyn Arnold. Therefore, the probability is greater for Oswald having some% of coke left in a bottle only 15 minutes later, and to be RSM than Lovelady with a 30 minute old coke bottle.