DL 9936 then DL 5227 at Atlanta
ILN → Atlanta → Roanoke
Timetable, Atlanta time
15:29DL 9936 from ILN at the gate
13:23DL 5227 to Roanoke leaves the gate
21 h 54 apart on the timetable, overnight
DL 5227 leaves 21 h 54 after DL 9936 arrives on the timetable: more than half a day, so not a connection we count.