AA 2622 then WN 3525 at Phoenix
Philadelphia → Phoenix → St Louis
Timetable, Phoenix time
23:59AA 2622 from Philadelphia at the gate
08:50WN 3525 to St Louis leaves the gate
8 h 51 apart on the timetable, overnight
The last days
AA 2622 and WN 3525 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.