UA 949 then QR 3391 at San Francisco
London → San Francisco → San Diego
Timetable, San Francisco time
16:55UA 949 from London at the gatealso LX 3048, AC 5082, OS 7855, SN 9101, LH 9378, NZ 9855
10:29QR 3391 to San Diego leaves the gatealso QF 3748
17 h 34 apart on the timetable, overnight
QR 3391 leaves 17 h 34 after UA 949 arrives on the timetable: more than half a day, so not a connection we count.