DL 8918 then DL 8801 at Atlanta
Washington → Atlanta → Miami
Timetable, Atlanta time
00:37DL 8918 from Washington at the gate
10:04DL 8801 to Miami leaves the gate
9 h 27 apart on the timetable
The last days
DL 8918 and DL 8801 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.