There's no way to compare the physique of the two men in these pictures. All that can be said is that both are wearing baggy, dark coloured suits.
I disagree. Look also at the footage of Mr. Shelley being led to the cop car with Messrs. Williams & Arce. He's not a big man. The guy is Darnell is too burly, broad-shouldered IMO
Lovelady's testimony (I really am not a fan of relying on his or Shelley's words unless I feel they are corroborated) states that Shelley was close by while he was having his interaction with Gloria.
Well, he and Mr. Shelley testify that NEITHER of them leaves the steps until after Ms. Calvery comes running up. Mr. Shelley (and you are under no illusion about this) is lying, and Mr. Lovelady is covering for him.
If what you are saying happened is what actually happened, what reason would Mr. Shelley possibly have for lying about it? He ran out, bumped into Ms. Calvery, then ran back to the steps. No big deal, right?