Hooded secret meetings and such or even something like the DFsocial. The BA Oaths don't hold for the women caug by the BA Hunters ... They've been removed so they could reveal suspicions such as "I only know one woman with xxx level of strength... Sheriam" certainly Talene would would have given it thought given Sheriams position as a very young MoN while Talene was a Sitter. She may well have been told to support Sheriam in the role if necessary. Just as she thought Elaida was BA.

In general I find it interesting that the BA women captured by the Hunters didn't have more "potential" candidates to offer up. It's obvious that the BA was exerting control over Ajah and Tower votes by telling BA members ow to vote.

As a BA member, you are told to vote for sister X by you BA message system ... And you've encountered a sister of the same strength in some secret meeting, like forming a circle to torture Tamra, seems like the type of info you would give up while being put to the question.

Given how few AS there are, there probably aren't too many women who have the exact same strength. Narrow that down to 1/3 of that total and you have to figure strength is the type of thing that would give a BA member away to another BA member. Certainly not EVERY BA member would give it thought, but certainly some should. Talene as a relatively strong AS should have noticed IMO.