AC 4589 then QR 3422 at San Francisco
Santa Ana → San Francisco → San Diego
Timetable, San Francisco time
11:20AC 4589 from Santa Ana at the gatealso UA 5479, VA 8497, LH 9239
07:04QR 3422 to San Diego leaves the gate
19 h 44 apart on the timetable, overnight
QR 3422 leaves 19 h 44 after AC 4589 arrives on the timetable: more than half a day, so not a connection we count.