upgrade on codeshare flights?
"UuA can also be applied to American Airlines and Iberia flights and/or tickets combining travel on either of these airlines plus BA. The rules that apply to upgrading BA flights generally apply to AA and IB flights, albeit with a few differences."
does this mean, executive members can upgrade on codeshare flight between these three airlines?
example:
BA marketed - AA operated
BA marketed - IB operated
AA marketed - BA operated
AA marketed - IB operated
IB marketed - BA operated
IB marketed - AA operated
if upgrade on these flights is permitted, which upgrade table should the member refer to? the marketing or the operating airline?