F9 3990 then AA 4105 at Detroit
Dallas-Fort Worth → Detroit → Chicago O'Hare
Timetable, Detroit time
21:43F9 3990 from Dallas-Fort Worth at the gate
20:54AA 4105 to Chicago O'Hare leaves the gate
23 h 11 apart on the timetable, overnight
AA 4105 leaves 23 h 11 after F9 3990 arrives on the timetable: more than half a day, so not a connection we count.