AA 642 then UA 5963 at O'Hare
Dallas-Fort Worth → Chicago → Charleston (South Carolina)
Timetable, Chicago time
13:10AA 642 from Dallas-Fort Worth at the gate
07:47UA 5963 to Charleston (South Carolina) leaves the gate
18 h 37 apart on the timetable, overnight
UA 5963 leaves 18 h 37 after AA 642 arrives on the timetable: more than half a day, so not a connection we count.