WN 191 then QF 3741 at San Francisco
St Louis → San Francisco → San Diego
Timetable, San Francisco time
12:25WN 191 from St Louis at the gate
07:04QF 3741 to San Diego leaves the gate
18 h 39 apart on the timetable, overnight
QF 3741 leaves 18 h 39 after WN 191 arrives on the timetable: more than half a day, so not a connection we count.