I can vouch for that.
I had , as part of a OWA, a connecting flight from Los Angeles to Seattle on American Airlines. in 2 months time.
It departed at 1400 hrs ( I arrived in LAX at 0850 ) It connected with a Seattle to Fairbanks flight on Alaskan at 1930 . Nice "chest pain" free connection.
AA has cancelled 1400 departure and put us on the 1800 one - misconnect!
I rang the QFF number and nil options could be found - on the day before or the day after.
The very competent lady rang the One World Help Desk - Alaskan , even though it flies close to hourly LAX-SEA, refused to make reward seats available because the cancellation is by AA and not them.
Yes, I have tried other connections on AA LAX- SEA eg via ONT,SNA and even landing in PAE ( near Seattle ) and say flying on AA via DEN and DFW - all available misconnect badly ! I even requested release of award seats leaving SYD the day before but nil available .
I'm going to ring after 1 january in case another Alaskan agent is more amenable - from what the QFF agent said , AA is usually reasonable with this kind of thing vs Alaskan.
Very frustrating but that's life !
Cheers for 2024.