DL 3004 then UA 571 at Atlanta
Greensboro → Atlanta → San Francisco
Timetable, Atlanta time
08:33DL 3004 from Greensboro at the gate
07:00UA 571 to San Francisco leaves the gate
22 h 27 apart on the timetable, overnight
UA 571 leaves 22 h 27 after DL 3004 arrives on the timetable: more than half a day, so not a connection we count.