I'm about to use my 2-for-1 voucher to book the inbound portion of an itinerary: PVG–LHR–ORD. Quick question—since the segments become available on different days, can I go ahead and book PVG–LHR online at T-355, then call British Airways the next day to:
- Add the LHR–ORD leg, and
- Link this inbound to my outbound booking so that the PVG–LHR segment I booked online qualifies for the 2-for-1 rebate?