DL 996 then DL 3746 at LAX
Atlanta → Los Angeles → San Diego
Timetable, Los Angeles time
08:59DL 996 from Atlanta at the gate
21:58DL 3746 to San Diego leaves the gate
12 h 59 apart on the timetable
DL 3746 leaves 12 h 59 after DL 996 arrives on the timetable: more than half a day, so not a connection we count.