See
http://home.webflyer.com/fewmiles/on...wenotes.html#1
1. WRT
codeshares
9/ TRAVEL ON ANY AA/AY/BA/CX/EI/IB/LA/QF/DI/LP CODESHARE SERVICE OPERATED BY
AA/AY/BA/CX/EI IB/LA/QF/DI/LP IS PERMITTED. ALL OTHER CODESHARE FLIGHTS ARE NOT
PERMITTED.
EXCEPTION-- TRAVEL NOT PERMITTED ON CX FLIGHTS
760-769/790-799/1000-1119/1290-1299/1748-1749. GROUND TRANSPORTATION SERVICES
OPERATED BY BA/CX/QF/DI MAY NOT BE INCLUDED AS PART OF THE ONE WORLD EXPLORER
FARE.
That being said, there is no reason to book on code-share flights (other than trying to earn trans-atlantic BA miles) as they don't earn any more points or status on AA. The only other reason would be to re-qualify for elite status which requires a minimum of 4 AA segments, which I imagine code-shares counts.
2. WRT
segments after stopover
III/WHEN THE STOPOVER MAXIMUM HAS BEEN REACHED ANY REMAINING UNUSED FLIGHT
SEGMENTS SHALL BE FORFEITED.
AFRICA 4
ASIA 5
EUROPE/MIDDLE EAST 4 - NO MORE THAN 2 OF WHICH MAY BE TO/FROM THE MIDDLE EAST
NORTH AMERICA 6
SOUTH AMERICA 4
SOUTHWEST PACIFIC 4
Yes, it sures sounds like you can only fly inter-continental segments after your third stop. I don't know how I did it then, as I did not stop over in both CX's (HKG) and BA's gateway cities.
[This message has been edited by hsi.chang (edited 04-19-2001).]