That is what therapy is like for us. We try and piece it together by typing whatever is remembered into a word document. We then go back and different ones read it and add the bits they remember so we get a fuller picture of what went on.
We are doing the same thing for the assessment we had this week. We have added more bits to it today, but there is still a lot missing. We were there for two hours... from what is written we've captured maybe half an hour of it. We open the document, reread, and type whatever we can remember.
But that would seem like far too much effort for an AA meeting...