DL 1163 then DL 5609 at Boston
Detroit → Boston → New York LaGuardia
Timetable, Boston time
08:59DL 1163 from Detroit at the gate
21:00DL 5609 to New York LaGuardia leaves the gate
12 h 01 apart on the timetable
DL 5609 leaves 12 h 01 after DL 1163 arrives on the timetable: more than half a day, so not a connection we count.