AA 1948 then QR 3422 at San Francisco
Chicago O'Hare → San Francisco → San Diego
Timetable, San Francisco time
13:28AA 1948 from Chicago O'Hare at the gate
07:04QR 3422 to San Diego leaves the gate
17 h 36 apart on the timetable, overnight
QR 3422 leaves 17 h 36 after AA 1948 arrives on the timetable: more than half a day, so not a connection we count.