AA 4980 then AA 990 at Phoenix
Tucson → Phoenix → Chicago O'Hare
Timetable, Phoenix time
19:02AA 4980 from Tucson at the gate
07:03AA 990 to Chicago O'Hare leaves the gate
12 h 01 apart on the timetable, overnight
AA 990 leaves 12 h 01 after AA 4980 arrives on the timetable: more than half a day, so not a connection we count.