F9 3971 then AA 2720 at Phoenix
Dallas-Fort Worth → Phoenix → Chicago O'Hare
Timetable, Phoenix time
11:31F9 3971 from Dallas-Fort Worth at the gate
11:27AA 2720 to Chicago O'Hare leaves the gate
23 h 56 apart on the timetable, overnight
AA 2720 leaves 23 h 56 after F9 3971 arrives on the timetable: more than half a day, so not a connection we count.