From your own post, do you not see the inconsistencies of descriptions and relative times different witnesses allegedly saw BG? The car backed in does not seem to be RA’s vehicle. One witness described it as a purple PT cruiser; another witness described it as vintage model Mercury(I think) and the camera guy described it as a 90’s movie type vehicle and says it was there early in the morning and later in the afternoon.
Also, why did SC change her description of the man’s clothes from “muddy” to muddy and bloody”? That came out during x-exam.
Also, I thought Betsy Blair initially described seeing only 3 girls on or near the Freedom Bridge.
If RA was there from approx 12:00 pm - 2:00 ish, like he later claimed, that could explain why none of the eyewitnesses give a physical description that matches RA.
Just tossing around some ideas and JMO