WN 4960 then DL 3088 at Detroit
St Louis → Detroit → Washington
Timetable, Detroit time
22:25WN 4960 from St Louis at the gate
21:46DL 3088 to Washington leaves the gate
23 h 21 apart on the timetable, overnight
DL 3088 leaves 23 h 21 after WN 4960 arrives on the timetable: more than half a day, so not a connection we count.