Are you sure? I was shot down when trying to do this (stopover at LAX en route to JFK) and was told Hong Kong was the only valid stopover point. I ended up using AAdvantage miles and I am combining AS and CX metal only. If I burned my Aadvantage miles for an award I could have done on Alaska, I'm sure not happy about it!
Originally Posted by
baliktad
AS allows one stopover at any connecting point in the journey. This could be at your North American departure point (YVR/SFO/LAX) or HKG. In practice, due to AS' limited route network and rule that only AS metal can be added to a partner award, opportunities to take advantage of this are limited.