AA 3239 then QF 7554 at O'Hare
Pittsburgh → Chicago → Dallas-Fort Worth
Timetable, Chicago time
16:54AA 3239 from Pittsburgh at the gate
13:37QF 7554 to Dallas-Fort Worth leaves the gate
20 h 43 apart on the timetable, overnight
QF 7554 leaves 20 h 43 after AA 3239 arrives on the timetable: more than half a day, so not a connection we count.