I recently obtained a few DVDs with WW2 era navy aircraft training films and documentaries. I was watching one about offensive fighter tactics, and the following sequence jumped out at me. The first part looks like WC1 and the second part with the actual plane launch is just like WC2. Is it a direct connection? I have no idea, but it sure looks similar.
5.65 mb XviD .avi
http://web.syr.edu/~adkirsch/scramble_sm.avi
5.65 mb XviD .avi
http://web.syr.edu/~adkirsch/scramble_sm.avi