AC 4031 then UA 5508 at San Francisco
Albuquerque → San Francisco → Carlsbad
Timetable, San Francisco time
21:05AC 4031 from Albuquerque at the gatealso NZ 9098
18:45UA 5508 to Carlsbad leaves the gate
21 h 40 apart on the timetable, overnight
UA 5508 leaves 21 h 40 after AC 4031 arrives on the timetable: more than half a day, so not a connection we count.