What about international codeshares? Will a QF metal, QF flight number connecting to CX metal, Qantas codeshare connection be interlined if on different PNRs?
If it will, then why the hell can't a QF to CX flight number be interlined? Of course, it can be done - as we've seen for the past X years. Its just now Qantas have decided they won't do it.
Fancy making passengers - Qantas' passengers - in some cases get a visa, go through immigration, collect bags, go to check-in in the 'transit' country then back through security just to continue their journey. Remember, this new policy was not imposed on Qantas. They chose to bring it in.