DL 346 then DL 5227 at Atlanta
Denver → Atlanta → Roanoke
Timetable, Atlanta time
15:20DL 346 from Denver at the gate
13:23DL 5227 to Roanoke leaves the gate
22 h 03 apart on the timetable, overnight
DL 5227 leaves 22 h 03 after DL 346 arrives on the timetable: more than half a day, so not a connection we count.