U don't have to do 1/3 as much if you rewire to Abelton. I think u guys are experiencing user era with FL though. You're missing one of the key steps some where down the line.
If you can use FL BY ITSELF with your midi keyboard, trigger finger or what ever and you can use Reason BY ITSELF with your midi keyboard , trigger finger etc etc then they should work together rewired.
Now if they don't work with them separately you don't have the right drivers installed or you haven't made the right selection within the software. U really can't depend on tutorials for everything. U gotta stop, slow down and read the manual or for your software and midi gear. Whether you understand it all right now or not if you READ, when you do finally see it you'll have a better understanding of what's going on. Read first, tutorials second. I promise you that if you follow that advice things will come to you a lot faster and plus you'll eventually know your software and gear inside and out.