DL 1119 then DL 3964 at Detroit
Savannah → Detroit → Grand Rapids
Timetable, Detroit time
14:04DL 1119 from Savannah at the gate
09:00DL 3964 to Grand Rapids leaves the gate
18 h 56 apart on the timetable, overnight
DL 3964 leaves 18 h 56 after DL 1119 arrives on the timetable: more than half a day, so not a connection we count.