WN 4960 then DL 2073 at Detroit
St Louis → Detroit → Washington National
Timetable, Detroit time
22:25WN 4960 from St Louis at the gate
21:55DL 2073 to Washington National leaves the gate
23 h 30 apart on the timetable, overnight
DL 2073 leaves 23 h 30 after WN 4960 arrives on the timetable: more than half a day, so not a connection we count.