Yes, compiling and editing documents, stumbling through verbal fragments and juggling asides, can be time consuming, especially as I often find myself writing follow-up letters, asking searching questions, and then reshaping the writing of the interview to reach a deeper level of understanding.
However, rather than relying on notes, quickly jotted down in a darkened theatre, or getting influenced by superficial first impressions of an interviewee, I send the penultimate version of the interview to the subjects and ask them for their input. Even if theatre artists want to change something that they had said earlier, now they have a chance to fine-tune it. As a result, the readers of my interviews really get to learn what the writers, directors, etc. really want to say.