For each question we would take turns answering it. We were allowed to say, "Pass," if the question made us too uncomfortable or, if we couldn't think of a good answer fast enough, we could pass and come back to it after everyone else had answered.
We were already at the level of acquaintances, close enough to be at the same location, hanging out, but I didn't trust any of them yet, and they barely knew me.
I wonder also if it might be commitment to the experience as much as the experience itself that affirms the bond and establishes a platform for ongoing friendship.
Yes? One person in particular, I became friends with them extremely quickly about 2 years ago. There was no contrived questionnaire involved, we just clicked, but after one falling out, the bridge was completely burned.