It's just a weird combo, kinda opposites, the Zone is meant to slow things down and allow you to play with 7-8 players, while Fastbreak is meant to speed things up. I have never tried it or heard anything about the combo, so maybe I don't know what I'm talking about. Fastbreak seems to naturally fit in with press and triangle naturally fits in with Zone. The first combo requires deep, athletic, fast players. While the second requires few guys that each bring something to the table and they don't need to be well rounded.