I'm thinking about TWOV, so I looked up the fare rules. Specifically:
END-ON-END
END-ON-END COMBINATIONS PERMITTED. VALIDATE ALL FARE
COMPONENTS. SIDE TRIPS PERMITTED.
PROVIDED -
COMBINATIONS ARE FOR CARRIER UA/CM WITHIN AREA 1
COMBINATIONS ARE FOR CARRIER UA WITHIN AREA 3
COMBINATIONS ARE FOR CARRIER UA/LH/LX/OS/AC/SN
PUBLISHED FOR TRAVEL VIA THE ATLANTIC.
Can I do anything with this, given that UA doesn't operate any within-Asia flights ex-PVG (from what I can see)?