I always felt there had to be a great 'Jason nightmare' or the movie wouldn't work and how Jason and Freddy would get together was always a problem for me. As time went by, we needed to re-integrate the back stories on both monsters in the script. Now all those things are accomplished amazingly and amazingly fast, I think. You're going to have to surrender a little bit to the contrivance of how Freddy and Jason get together. Freddy literally needs Jason.