DL 5619 then B6 817 at Boston
Milwaukee → Boston → New York JFK
Timetable, Boston time
22:02DL 5619 from Milwaukee at the gate
18:39B6 817 to New York JFK leaves the gate
20 h 37 apart on the timetable, overnight
B6 817 leaves 20 h 37 after DL 5619 arrives on the timetable: more than half a day, so not a connection we count.