DL 1558 then DL 2684 at Detroit
Washington National → Detroit → Charlotte
Timetable, Detroit time
11:22DL 1558 from Washington National at the gate
10:40DL 2684 to Charlotte leaves the gate
23 h 18 apart on the timetable, overnight
DL 2684 leaves 23 h 18 after DL 1558 arrives on the timetable: more than half a day, so not a connection we count.