AA 873 then DL 3005 at Atlanta
Chicago O'Hare → Atlanta → Greensboro
Timetable, Atlanta time
10:23AA 873 from Chicago O'Hare at the gate
22:42DL 3005 to Greensboro leaves the gate
12 h 19 apart on the timetable
DL 3005 leaves 12 h 19 after AA 873 arrives on the timetable: more than half a day, so not a connection we count.