UA 561 then UA 1668 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
13:50UA 1668 to San Diego leaves the gatealso AC 4559, NH 7300, VA 8431
17 h 40 apart on the timetable, overnight
UA 1668 leaves 17 h 40 after UA 561 arrives on the timetable: more than half a day, so not a connection we count.