AA 2579 then F9 3990 at DFW
Denver → Dallas-Fort Worth → Detroit
Timetable, Dallas-Fort Worth time
16:21AA 2579 from Denver at the gate
14:55F9 3990 to Detroit leaves the gate
22 h 34 apart on the timetable, overnight
F9 3990 leaves 22 h 34 after AA 2579 arrives on the timetable: more than half a day, so not a connection we count.