DL 5684 then DL 5609 at Boston
Cleveland → Boston → New York LaGuardia
Timetable, Boston time
08:02DL 5684 from Cleveland at the gate
21:00DL 5609 to New York LaGuardia leaves the gate
12 h 58 apart on the timetable
DL 5609 leaves 12 h 58 after DL 5684 arrives on the timetable: more than half a day, so not a connection we count.