>I am also now aware of time stolen: I have been told that post-op I was interviewed for 10-15 minutes (research project related). Time spent conscious, communicating. Somebody was there, but as far as I am concerned, it wasn't "me" - I have zero awareness of this lucid episode. It's like theft of time.

Doesn't need anesthesia for that. Amnesia after some shock, or just being heavily drunk and having no recollection of what you did, will also achieve that.