AA 980 then AA 990 at Phoenix
Burbank → Phoenix → Chicago O'Hare
Timetable, Phoenix time
20:16AA 980 from Burbank at the gate
07:03AA 990 to Chicago O'Hare leaves the gate
10 h 47 apart on the timetable, overnight
The last days
AA 980 and AA 990 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.