Oneworld has just announced that its airlines are no longer required to check through / interline their multi-leg pax / baggage to the final destination if flights are on separate bookings. This was previously generally done by most OW airlines. So pax on such bookings will have to re-checkin at the transit airport, potentially requiring baggage collection, immigration, visa issues etc.

This will mostly apply to situations where flights are with different OW carriers, but some carriers will not even check through when both flights are with them. However airlines are able to offer more than the minimum OW standard, so some may still check pax/baggage through, with same or different carrier multi-ticket bookings.

This is causing considerable consternation with OW pax who regularly fly this way, to the point that some are considering changing alliances.

As a relative newbie to *A, what is the situation with *A ?

Do *A carriers check through / issue boarding passes to final destination, if on separate bookings with the same and/or different *A carriers ?