BA 2951 then QR 2091 at San Francisco
Portland (Oregon) → San Francisco → Santa Ana
Timetable, San Francisco time
13:46BA 2951 from Portland (Oregon) at the gatealso AA 7511
09:00QR 2091 to Santa Ana leaves the gate
19 h 14 apart on the timetable, overnight
QR 2091 leaves 19 h 14 after BA 2951 arrives on the timetable: more than half a day, so not a connection we count.