DL 763 then UA 2157 at LAX
Atlanta → Los Angeles → Houston
Timetable, Los Angeles time
19:55DL 763 from Atlanta at the gate
11:45UA 2157 to Houston leaves the gate
15 h 50 apart on the timetable, overnight
UA 2157 leaves 15 h 50 after DL 763 arrives on the timetable: more than half a day, so not a connection we count.