AA 1623 then DL 735 at DFW
Washington National → Dallas-Fort Worth → Detroit
Timetable, Dallas-Fort Worth time
14:34AA 1623 from Washington National at the gate
13:36DL 735 to Detroit leaves the gate
23 h 02 apart on the timetable, overnight
DL 735 leaves 23 h 02 after AA 1623 arrives on the timetable: more than half a day, so not a connection we count.