They certainly didn't seem to have as much fun as you by the end! I guess they understandably hoped beforehand that they might persuade you to their point of view (they seemed to have a step by step process in mind (first establish that there's a creator, then...).
Yes, I guessed before the event that the approach would be
1: Here is something big that science cannot prove yet
2: How did it happen?
3: Don't know? Must have been Allah then
Theists like to try to get you to ignore the goal post 30 feet away and aim for the one on the moon. That's why I went straight ahead and for the sake of argument conceded that god exists, created the universe, and started life in some form or other. That way we could concentrate our time on "Why is it YOUR god that did it?". Otherwise we'd have argued for 2 hours about cosmology and they'd have left thinking I was insane
It's best to unravel the garment at the edges, not from the middle.