QR 8143 then AA 879 at O'Hare
Warsaw → Chicago → Dallas-Fort Worth
Timetable, Chicago time
17:47QR 8143 from Warsaw at the gate
16:53AA 879 to Dallas-Fort Worth leaves the gate
23 h 06 apart on the timetable, overnight
AA 879 leaves 23 h 06 after QR 8143 arrives on the timetable: more than half a day, so not a connection we count.