DL 763 then DL 3963 at LAX
Atlanta → Los Angeles → San Diego
Timetable, Los Angeles time
19:55DL 763 from Atlanta at the gate
14:11DL 3963 to San Diego leaves the gate
18 h 16 apart on the timetable, overnight
DL 3963 leaves 18 h 16 after DL 763 arrives on the timetable: more than half a day, so not a connection we count.