AA 642 then AA 3681 at O'Hare
Dallas-Fort Worth → Chicago → Springfield Branson National
Timetable, Chicago time
13:10AA 642 from Dallas-Fort Worth at the gate
08:18AA 3681 to Springfield Branson National leaves the gate
19 h 08 apart on the timetable, overnight
AA 3681 leaves 19 h 08 after AA 642 arrives on the timetable: more than half a day, so not a connection we count.