The point being Walt, that the assumption that Williams would not have occupied the SN because of difficulty of access using Mooney's testimony is actually unfounded by Mooney's testimony.
I don't know how anybody can positively prove that BRW was, or was not, in that cubby hole erroneously called "the Sniper's Nest" .....
IMO it's unimportant..... Because there were no shots fired from that site.