AA 3821 then AA 1974 at DFW
Tulsa → Dallas-Fort Worth → Chicago O'Hare
Timetable, Dallas-Fort Worth time
06:20AA 3821 from Tulsa at the gate
06:12AA 1974 to Chicago O'Hare leaves the gate
23 h 52 apart on the timetable, overnight
AA 1974 leaves 23 h 52 after AA 3821 arrives on the timetable: more than half a day, so not a connection we count.