DL 4634 then WN 2400 at Detroit
Indianapolis → Detroit → St Louis
Timetable, Detroit time
07:55DL 4634 from Indianapolis at the gate
20:25WN 2400 to St Louis leaves the gate
12 h 30 apart on the timetable
WN 2400 leaves 12 h 30 after DL 4634 arrives on the timetable: more than half a day, so not a connection we count.