BRW was never in the SN. Neither BRW's statement nor anyone else places him in the SN. If you have a statement or evidence of him being in the SN feel free to post it.
So your entire claim that BRW was never in the SN is based upon nothing else but the lack of a statement placing BRW in the SN?
Well, Oswald nor anyone else places him in the SN just prior or during the shots, so by your "reasoning" Oswald wasn't there either, right?
Knowing that shots were possibly or likely fired from that exact location, do you really think that BRW would have any incentive to say "yeah, I was there a few minutes prior to the shots"?