UA 6047 then AA 936 at O'Hare
Pittsburgh → Chicago → Dallas-Fort Worth
Timetable, Chicago time
19:00UA 6047 from Pittsburgh at the gate
17:59AA 936 to Dallas-Fort Worth leaves the gate
22 h 59 apart on the timetable, overnight
AA 936 leaves 22 h 59 after UA 6047 arrives on the timetable: more than half a day, so not a connection we count.