AA 2622 then WN 423 at Phoenix
Philadelphia → Phoenix → Nashville
Timetable, Phoenix time
23:59AA 2622 from Philadelphia at the gate
08:55WN 423 to Nashville leaves the gate
8 h 56 apart on the timetable, overnight
The last days
AA 2622 and WN 423 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.