I was interviewed back when it was common, and yes I took everything and yes he asked for a couple of things, how long would it take to go through 750 pages?
This seems an odd question as there are specialist Lawyers who focus on the Entertainment Industry and handle these by the bucket load.
I would think Agents/Management Teams would be well aware of them and who to use.
There is never an official reason, and time lines vary, I have seen quite a few people use Henya who are not Kenyans so maybe that is hurting the processing times.