AA 3083 then DL 5272 at Atlanta
Philadelphia → Atlanta → Knoxville
Timetable, Atlanta time
13:24AA 3083 from Philadelphia at the gate
20:52DL 5272 to Knoxville leaves the gate
7 h 28 apart on the timetable
The last days
AA 3083 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.