DL 1119 then DL 1171 at Detroit
Savannah → Detroit → Boston
Timetable, Detroit time
14:04DL 1119 from Savannah at the gate
14:00DL 1171 to Boston leaves the gate
23 h 56 apart on the timetable, overnight
DL 1171 leaves 23 h 56 after DL 1119 arrives on the timetable: more than half a day, so not a connection we count.