AA 642 then DL 3983 at O'Hare
Dallas-Fort Worth → Chicago → Minneapolis
Timetable, Chicago time
13:10AA 642 from Dallas-Fort Worth at the gate
12:30DL 3983 to Minneapolis leaves the gate
23 h 20 apart on the timetable, overnight
DL 3983 leaves 23 h 20 after AA 642 arrives on the timetable: more than half a day, so not a connection we count.