WN 1638 then DL 2316 at Detroit
Chicago Midway → Detroit → Nashville
Timetable, Detroit time
17:15WN 1638 from Chicago Midway at the gate
16:38DL 2316 to Nashville leaves the gate
23 h 23 apart on the timetable, overnight
DL 2316 leaves 23 h 23 after WN 1638 arrives on the timetable: more than half a day, so not a connection we count.