Gerry it might have been in one of Frazier's oral histories or interviews. When I heard it, it made sense as Frazier went outside late and simply stood at the top of the steps. I will search my notes to see if I recorded the source.
Thanks. Its a good idea to keep notes and records cos there is just so much data to sift through when examining this case.
My understanding is that Frazier went out early enough to the front steps. Doughertys claim before the WC was that it was so crowded outside the door that he didn't bother going out. That suggests there was a separation between the two. Dougherty was probably still eating in the domino room when Frazier went out. However if Dougherty and Arce were eating together, and Arce made it outside ok to watch the motorcade, that means Doughtery must have been on his own in the domino room finishing his lunch, then got up and saw that it was too crowded to attempt to go outside.