Hi wrenchergirl,
Welcome to PsychCentral!
I do think that there are levels of integration and the process depends on a myriad of things.
How awesome that you have communication now.

My T and I are working toward that. It took a few years for me to even trust my T enough to be able to stay present in her office. For me, it seems as if it's a slow process. However, I just recently have noticed that I am making progress so that's cool!
I wish I had answers to all of your questions, but I don't actually have communication right now. That said though, I have gotten knowledge of a few memories and I do wonder if, when that happens, if that isn't part of the integration process. It's hard for me to tell because I still lose a lot of time and it doesn't seem as if the noise in my head is lessened any by getting that information.
Sometimes I wonder if fragments of parts disappear as I get the little memory stuff, but I don't know for sure.
I'm sorry that none of that really answers your questions, but I do want you to know that I read your post and I hope you find the answers you are searching for. Please keep posting!