DL 1078 then DL 3964 at Detroit
New York LaGuardia → Detroit → Grand Rapids
Timetable, Detroit time
11:27DL 1078 from New York LaGuardia at the gate
09:00DL 3964 to Grand Rapids leaves the gate
21 h 33 apart on the timetable, overnight
DL 3964 leaves 21 h 33 after DL 1078 arrives on the timetable: more than half a day, so not a connection we count.