DL 823 then UA 930 at San Francisco
Atlanta → San Francisco → London
Timetable, San Francisco time
17:16DL 823 from Atlanta at the gatealso AM 3256, LA 6318
16:40UA 930 to London leaves the gatealso LX 3049, AC 5376, OS 7858, SN 9100, LH 9379
23 h 24 apart on the timetable, overnight
UA 930 leaves 23 h 24 after DL 823 arrives on the timetable: more than half a day, so not a connection we count.