WN 3445 then B6 8353 at Boston
Kansas City → Boston → New York JFK
Timetable, Boston time
17:10WN 3445 from Kansas City at the gate
06:00B6 8353 to New York JFK leaves the gate
12 h 50 apart on the timetable, overnight
B6 8353 leaves 12 h 50 after WN 3445 arrives on the timetable: more than half a day, so not a connection we count.