AA 873 then DL 4628 at Atlanta
Chicago O'Hare → Atlanta → Roanoke
Timetable, Atlanta time
10:23AA 873 from Chicago O'Hare at the gate
08:58DL 4628 to Roanoke leaves the gate
22 h 35 apart on the timetable, overnight
DL 4628 leaves 22 h 35 after AA 873 arrives on the timetable: more than half a day, so not a connection we count.