DL 1914 then DL 3964 at Detroit
Houston → Detroit → Grand Rapids
Timetable, Detroit time
15:06DL 1914 from Houston at the gate
09:00DL 3964 to Grand Rapids leaves the gate
17 h 54 apart on the timetable, overnight
DL 3964 leaves 17 h 54 after DL 1914 arrives on the timetable: more than half a day, so not a connection we count.