F9 1669 then DL 519 at Atlanta
Raleigh-Durham → Atlanta → Denver
Timetable, Atlanta time
18:06F9 1669 from Raleigh-Durham at the gate
17:09DL 519 to Denver leaves the gate
23 h 03 apart on the timetable, overnight
DL 519 leaves 23 h 03 after F9 1669 arrives on the timetable: more than half a day, so not a connection we count.