AA 2397 then AA 1148 at Phoenix
Ontario → Phoenix → Chicago O'Hare
Timetable, Phoenix time
18:50AA 2397 from Ontario at the gate
00:36AA 1148 to Chicago O'Hare leaves the gate
5 h 46 apart on the timetable, overnight
The last days
AA 2397 and AA 1148 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.