CZ 1604 then UA 5508 at San Francisco
Los Angeles → San Francisco → Carlsbad
Timetable, San Francisco time
23:40CZ 1604 from Los Angeles at the gatealso AA 3176, AY 4048, QF 4743, EI 7533
18:45UA 5508 to Carlsbad leaves the gate
19 h 05 apart on the timetable, overnight
UA 5508 leaves 19 h 05 after CZ 1604 arrives on the timetable: more than half a day, so not a connection we count.