CM
Dunnno why that was alledgedly so. I asked the BZN sup if there was anything published about a change in policy / procedures, he was unaware of any hence he didnt know what "as published" referred to. The only thing he could offer was the old chestnut of capacity.
BW
Although the freq may not have sounded busy, there is the possibility that he may have been working other freq(s) that may not have been cross coupled so therefore you wouldnt have heard the other ac.
I am not sticking up for BZN as my expierience of their provision of a RIS under LARS has been patchy.
DD