UA 755 then QF 3741 at San Francisco
Reno → San Francisco → San Diego
Timetable, San Francisco time
09:28UA 755 from Reno at the gatealso AC 4415, NH 7379
07:04QF 3741 to San Diego leaves the gate
21 h 36 apart on the timetable, overnight
QF 3741 leaves 21 h 36 after UA 755 arrives on the timetable: more than half a day, so not a connection we count.