DL 9938 then DL 2902 at Atlanta
CWF → Atlanta → Washington
Timetable, Atlanta time
10:20DL 9938 from CWF at the gate
16:54DL 2902 to Washington leaves the gate
6 h 34 apart on the timetable
The last days
DL 9938 and DL 2902 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.