AM 668 then QR 3422 at San Francisco
Mexico City → San Francisco → San Diego
Timetable, San Francisco time
11:38AM 668 from Mexico City at the gatealso WS 6113, DL 8009, SK 9502
07:04QR 3422 to San Diego leaves the gate
19 h 26 apart on the timetable, overnight
QR 3422 leaves 19 h 26 after AM 668 arrives on the timetable: more than half a day, so not a connection we count.