DL 8945 then DL 5272 at Atlanta
Washington → Atlanta → Knoxville
Timetable, Atlanta time
16:41DL 8945 from Washington at the gate
20:52DL 5272 to Knoxville leaves the gate
4 h 11 apart on the timetable
The last days
DL 8945 and DL 5272 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.