That sounds like a defense of BA.

It would be very hyperbolic to equate them to Ryanair, but imo their interest in serving their passengers has become very luke-warm. Management sees costs but no benefit in making pax happy.

No doubt there is some cost in having someone schlep a bag over to a 'foreign' carrier (but if BA misses the transfer, it's the receiving carrier that handles the problem) and with no measurable benefit we just won't do that. Got more pax than we need.

My understanding is the originating carrier pays the cost of getting misplaced/misconnected bags to the passenger.

I recently was flying LAX-MIA-LHR on AA, then LHR-DOH on QR, each segment on separate Award tickets. No problem checking luggage through from LAX- DOH. Due to a delay due to a technical problem with the plane in MIA, ended up missing my connection in LHR. Had a long conversation with an extremely helpful AA agent in T3, who eventually got the missed connection sorted out. It turned out she is the AA representative to the meetings that are held by the Oneworld airlines regarding Oneworld policy, and what she told me is that it is Oneworld policy to treat back-to-back tickets as if it were a single ticket, as long as both segments are on Oneworld airlines. (In my case, the back-to-back Award tickets added a complication that she then sorted out.) So I understood from her that it should make no difference whether there is a back-to-back ticket or a single ticket regarding checking of baggage, handling any interrupts, and so on, so long as all legs involve just Oneworld airlines. Also, AA has now announced that it will not interline with non-Oneworld airlines with back-to-back tickets.

On another occasion I had a ticket with 4 segments and the agent just stapled together a baggage tag with 3 of the segments and a baggage tag with the fourth segment -- no problems.

Sorry, do not mean to hi jack this thread.
I have a similar question concerning interline baggage transfer.

My itin: NRT-HKG on CX J (late night arrival), connecting to HKG-DFW on AA J next day at 13:30. On separate tickets. I want to check my bag to DFW.

I don't think there should be any issue? Am I wrong?

If I did not have time to get my AA BP when I departing from NRT, would that make any difference? At night in HKG, is the transfer desk still be opened?

TIA.

There are a number of transfer desks at HKG, each near a transit security checkpoint. Most of the checkpoints close down over night, however 2 are open 24 hours. I assume the related transfer counter matches the checkpoint hours.

Can any of the transfer counters issue AA boarding passes?

I haven't used HKG transfer desks for AA but have for several other airlines, they are generally only open for a few to several hours before departure. I'm sceptical you can check in the evening for a flight departing the afternoon of the next day (particularly for an airline with only one flight a day).