DL 823 then UA 3900 at San Francisco
Atlanta → San Francisco → Hong Kong
Timetable, San Francisco time
17:16DL 823 from Atlanta at the gatealso AF 2495, AM 3256, LA 6318
07:00UA 3900 to Hong Kong leaves the gate
13 h 44 apart on the timetable, overnight
UA 3900 leaves 13 h 44 after DL 823 arrives on the timetable: more than half a day, so not a connection we count.