I don't want to contradict Robert's detailed report since I wasn't there, but I have read the briefs (and am an attorney), and the only special relationship issue raised in the briefs was whether WTS and/or the congregation had a special relationship with Candace Conti (and to a lesser degree Kendrick), and not with each other.
Ok that makes more sense to me, although anyone who has had dealings knows the Org certainly considers itself to have a special relationship with any publisher of the good news. But I guess proving it with tangible evidence is a lot harder.