Brennan thought the gunman was "standing" in the same sense as the black men were "standing" on the fifth floor.
Right. So if the guy Brennan saw had
actually stood up after the last shot then Brennan would have known that he
wasn't standing prior to that. But he didn't.
But Rowland claimed he saw the standing rifleman from the top of his head to "about 6 inches below his waist, below his belt."
Again, that works if the guy is standing far enough behind the window.
And standing back (as towards the North) even a few feet would mean he was obscured from Rowland's view by the building's brick facade.
I don't agree. Not at Rowland's angle. Look at the Hess video again. Well, I guess it depends on how far back the gunman was. How about back towards the northwest?