Originally Posted by
nufnuf77
Just wanted to add regarding YQ/taxes. one of the things thats allowed on RTW is to book any codeshare even if not connecting. booking things on JAL/CX etc significantly reduces YQ. OWE tool defaults usually to ticketing on first segment airline (and QR/BA/AA/QF all have high YQ), BUT You can get it JAL ticketed for much lower YQ.
Originally Posted by
anabolism
Codeshares and which airline tickets are separate, although both may affect carrier surcharges (YQ/YR). I've been able to book any codeshare for international flights, but not for domestic flights (which makes sense because of regulatory constraints).
Yes, as
anabolism said, not all code-share flights are bookable individually. Many have traffic restrictions.