AV 2191 then QF 3748 at San Francisco
Sydney → San Francisco → San Diego
Timetable, San Francisco time
06:25AV 2191 from Sydney at the gate
20:00QF 3748 to San Diego leaves the gate
13 h 35 apart on the timetable
QF 3748 leaves 13 h 35 after AV 2191 arrives on the timetable: more than half a day, so not a connection we count.