Did the 2nd person get it from clearing the event or opening a chest?
It's also worth noting that you can get inside to get to the chest with a key (if you have additional keys) AND NOT have to run the 32-35 to do so.
If what you're saying about guy number 3 is correct.
I don't know. I don't know what I got the fusion for. My fusion was the only thing that showed up on the post game rewards screen.