WN 1638 then DL 2030 at Detroit
Chicago Midway → Detroit → Washington National
Timetable, Detroit time
17:15WN 1638 from Chicago Midway at the gate
17:07DL 2030 to Washington National leaves the gate
23 h 52 apart on the timetable, overnight
DL 2030 leaves 23 h 52 after WN 1638 arrives on the timetable: more than half a day, so not a connection we count.