Wirelessly posted (BlackBerry8530/5.0.0.1030 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)

"I'd do one one-way from JFK - SFO (stopover) - HKG, and another one-way HKG - SFO - JFK (stopover) - LON...would this work?"

HKG-SFO-JFK (stop) - LON would not be allowed, for several reasons:

1. AAdvantage awards between Asia and Europe do not permit a transit via North America.

2. Even if AA permitted a North America transit on a HKG-LON award, the free stopover is only permitted on awards between North America and another zone; HKG-LON would be an award between Asia 2 and Europe.

3. Awards between North America and another zone (in either direction) only permit a stopover at the North American gateway. On a HKG-SFO-JFK itinerary, the gateway is SFO, not JFK. So you could have a stopover at SFO, and then continue on to some other North American destination, as permitted by CX's routing rules. Whether HKG-SFO-JFK or JFK-SFO-HKG would be permitted depends on CX's routing rules on its published HKG-JFK/JFK-HKG fares.