T#2 said that T#1 wrote to her saying that she (T#1) feels that I am trying to control by wanting to know what is spoken about me. T#1 also said that based on past instances, when I try to control her, others, or situations, things turn out badly.

If I may speak for myself, however, while it seems like control on the surface, I'm doing it to keep myself safe. While I think that there are some wisdom and knowledge T#1 could pass on to T#2, I don't think that T#1 is necessarily accurate in all her conceptualization of me. Additionally, I really want to understand/learn how T#1 understood me and conceptualized my case. After all, it was three years and six months of deep, committed work. I am not trying to control T#1, T#2, or the situation by wanting their conversations to be shared with me.

Also, if someone tells you to promise them something before s/he tells you what that something is, would you be able to promise them? In other words, I think it's also possibly difficult for T#2 to agree to T#1's terms about keeping the content of the conversation private without even knowing what T#1 would share with her.

T#2 also said that she thinks it is only "humane" for me to know what is said about me. T#2 said that she has always been able to give her patients a summary of what is said between her and patients' former therapists.

It is unclear what T#2 meant when she said that it is a violation of boundary. It is unclear whether she meant that it is a violation of professional boundary or a violation of her personal boundary.

T#1 did say to me that whatever she shares with T#2 is out of support for my work and relationship with T#2, not to hurt it.