Originally Posted by
CloudsBelow
This is another cheap, sly move on the part of AC...Almost booked YOW-LHR-BKK in "Lowest Exec". Noticed a warning on the left of the screen "LHR-BKK" not available in Executive cabin. Umm, are you kidding!?!? A 12 hour flight with a warning like that?
Your situation is different from OP whose flgihts are all AC metal since in your case the Y segment involves a codeshare. For osme reason I find that codeshare Z fare connections almost always seem to book in Y - even though you can often get business class for the entire journey for the same fare if you book on something like Expedia.