After reading the GD summit thread I was asking myself who had what to gain.
now if most attendees get time with these speakers it is definitetly an edge for their courses.
I want to address the original question and the fact that the architects rubbed shoulders will have no effect on the rankings. I would say 100% of the questions to the architects (during chit-chat at dinner, etc.) had to do with old courses and why they did this or that. Fazio at this point doesn't care about say; Caves Valley, but at least had the chance to discuss why he did something.
Furthermore, there where alot of panelists who belonged to clubs designed by the architects so they all got a chance to discuss their home clubs.
I would say Nicklaus, Palmer and especially Dye had virtually no serious interaction with panelists that could effect anything. Fazio and Rees stayed most of the time although Fazio didn't play golf. I personally was paired with Rees Jones for golf and he never discussed any golf course unless I asked. We did discuss drainage and classic courses much like we discuss here, but rarely if anytime did we discuss his courses. I did take the time to talk to him about his family, he has 2 daughters and is about to become a grandfather for the first time, we discussed his mother and father and of course his strained relationship with his brother.
I hope Mike is not suggesting anything improper went on but it was just a chance for education for the panelists, Golf Digest (who probably learned the most) and the architects.