Originally Posted by
watery
Although I can only look at future info, DPS doesn't even have PEY on sale on CX website, booking MAD-HKG-DPS PEY will give you Y on HKG-DPS, and finding HKG-DPS shows all dates "Only available in Business".
So perhaps the couple picked a PEY-Y mixed fare and thought they got PEY for HKG-DPS too?