Gawd, Dylan is going to get his arse handed to him.
I disagree. Dylan is going to come off not looking as bad as he could because all he is going to do is to throw a whole list of "questions" out, and won't debate anything. In the end, he will just say that the other guy didn't actually address the issues he brought up.
I hope I'm wrong, but, as I've said before, these vaguely defined "debates" are a bad idea. See the example of Fetzer in Slingblade's thread about LC coming to her school. When he got a question about whether there were real passengers on the planes, he went through a list of about 10 other topics and never actually answered the question.
If you want to have "debates" on this, you have to narrow the topic and keep it on focus. Pick a Loosers claim such as "WTC 7 fell by controlled demolition" and discuss that. Then stupid crap like "the hijackers weren't on the passenger lists" can be dismissed as irrelevant to the topic at hand.
However, the general topic that 9/11 was a conspiracy is far too broad and a debate is going to be unproductive.
As has been pointed out, it's like debating creationists. They can start ripping out claims, and only hope that you don't have time to address them all. Then they can claim that you haven't addressed all their "questions" and declare victory.
I think it's a bad idea to go there.