DL 4649 then DL 3146 at Atlanta
Roanoke → Atlanta → New Orleans
Timetable, Atlanta time
12:43DL 4649 from Roanoke at the gate
15:30DL 3146 to New Orleans leaves the gate
2 h 47 apart on the timetable
The last days
DL 4649 and DL 3146 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.