DL 763 then UA 2831 at LAX
Atlanta → Los Angeles → San Francisco
Timetable, Los Angeles time
19:55DL 763 from Atlanta at the gate
11:21UA 2831 to San Francisco leaves the gate
15 h 26 apart on the timetable, overnight
UA 2831 leaves 15 h 26 after DL 763 arrives on the timetable: more than half a day, so not a connection we count.