AA 4802 then QF 7554 at O'Hare
Harrisburg → Chicago → Dallas-Fort Worth
Timetable, Chicago time
16:35AA 4802 from Harrisburg at the gate
13:37QF 7554 to Dallas-Fort Worth leaves the gate
21 h 02 apart on the timetable, overnight
QF 7554 leaves 21 h 02 after AA 4802 arrives on the timetable: more than half a day, so not a connection we count.