CA 7283 then UA 5508 at San Francisco
Los Angeles → San Francisco → Carlsbad
Timetable, San Francisco time
00:06CA 7283 from Los Angeles at the gate
18:45UA 5508 to Carlsbad leaves the gate
18 h 39 apart on the timetable
UA 5508 leaves 18 h 39 after CA 7283 arrives on the timetable: more than half a day, so not a connection we count.