WN 191 then CX 7912 at San Francisco
St Louis → San Francisco → San Diego
Timetable, San Francisco time
12:25WN 191 from St Louis at the gate
11:53CX 7912 to San Diego leaves the gate
23 h 28 apart on the timetable, overnight
CX 7912 leaves 23 h 28 after WN 191 arrives on the timetable: more than half a day, so not a connection we count.