UA 1226 then B6 8353 at Boston
Houston → Boston → New York JFK
Timetable, Boston time
16:49UA 1226 from Houston at the gate
06:00B6 8353 to New York JFK leaves the gate
13 h 11 apart on the timetable, overnight
B6 8353 leaves 13 h 11 after UA 1226 arrives on the timetable: more than half a day, so not a connection we count.