UA 561 then CX 7912 at San Francisco
Kansas City → San Francisco → San Diego
Timetable, San Francisco time
20:10UA 561 from Kansas City at the gatealso OZ 6318, NZ 9502
11:53CX 7912 to San Diego leaves the gate
15 h 43 apart on the timetable, overnight
CX 7912 leaves 15 h 43 after UA 561 arrives on the timetable: more than half a day, so not a connection we count.