DL 3737 then DL 2578 at Detroit
Milwaukee → Detroit → Austin
Timetable, Detroit time
20:59DL 3737 from Milwaukee at the gate
19:50DL 2578 to Austin leaves the gate
22 h 51 apart on the timetable, overnight
DL 2578 leaves 22 h 51 after DL 3737 arrives on the timetable: more than half a day, so not a connection we count.