How bizarre. The main reason for a committee to have contact with presenters would be, to my mind, to be able to work out if they were talking through their hats (to be polite). Why have minders? Maybe things work differently across the Atlantic.
The report seems to be an account of the interests of about 6-8 people. The code words are easy enough to read. It is intriguing how this came about. Maybe what matters is not the committee that wrote the report so much as the committee that appointed the committee that wrote the report or even the committee that appointed the committee that appointed the committee that wrote the report - except that that is probably the same people who wrote the report in some cases. Not to mention the committee that invited the experts...
Interesting anyway.
Perhaps part of the reason for the minders is that at least at the outset of the process, the panel is supposed to be unbiased about (in this case) the illness.
It has been suggested (by people involved) that some (I do not know how many) of the recommendations made by the working group that NIH assembled to develop the agenda, nominate speakers etc., were not implemented.