DL 763 then UA 198 at LAX
Atlanta → Los Angeles → Shanghai
Timetable, Los Angeles time
19:55DL 763 from Atlanta at the gate
12:45UA 198 to Shanghai leaves the gate
16 h 50 apart on the timetable, overnight
UA 198 leaves 16 h 50 after DL 763 arrives on the timetable: more than half a day, so not a connection we count.