DL 514 then DL 5840 at Boston
Phoenix → Boston → New York LaGuardia
Timetable, Boston time
06:23DL 514 from Phoenix at the gate
22:00DL 5840 to New York LaGuardia leaves the gate
15 h 37 apart on the timetable
DL 5840 leaves 15 h 37 after DL 514 arrives on the timetable: more than half a day, so not a connection we count.