DL 1697 then DL 5831 at Boston
Phoenix → Boston → New York LaGuardia
Timetable, Boston time
21:00DL 1697 from Phoenix at the gate
18:00DL 5831 to New York LaGuardia leaves the gate
21 h apart on the timetable, overnight
DL 5831 leaves 21 h after DL 1697 arrives on the timetable: more than half a day, so not a connection we count.