AA 3972 then QF 7554 at O'Hare
Bloomington-Normal → Chicago → Dallas-Fort Worth
Timetable, Chicago time
15:45AA 3972 from Bloomington-Normal at the gate
13:37QF 7554 to Dallas-Fort Worth leaves the gate
21 h 52 apart on the timetable, overnight
QF 7554 leaves 21 h 52 after AA 3972 arrives on the timetable: more than half a day, so not a connection we count.