just remember that it IS possible to have more than 2 0.5 routes if the routes are going between hubs.
e.g. LAX-NRT-SIN-KUL, each 0.5 where LAX and SIN are hubs. So LAX-NRT is 0.5, SIN-NRT is 0.5, and SIN-KUL is 0.5.
(ok, maybe not cuz i think that takes more than 24 hours, but you get the idea).