I have a business class RTW booked through AA. I am on CX from Europe to Bangkok connecting through Hong Kong.

When booked, it was a 3-1/2 hour connection at HKG. CX has removed that HKG-BKK flight from its schedule.

Rather than put me on an earlier flight with a 1:45 connection, or the next one with 2:45 connection, they automatically protected me on a flight that now has a 6-hour connection at HKG.

I called AA. Although there is "D" space available on both of the earlier flights, there is no RTW "D" availability.

Generally, the operating carrier will refer you to the issuing carrier for any change.

This is an involuntary change to the 6-hour connection. Do I push the issue with AA or contact CX directly?