AA 1504 then AA 2506 at Phoenix
Newark → Phoenix → Chicago O'Hare
Timetable, Phoenix time
20:51AA 1504 from Newark at the gate
05:30AA 2506 to Chicago O'Hare leaves the gate
8 h 39 apart on the timetable, overnight
The last days
AA 1504 and AA 2506 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.