B6 478 then B6 281 at JFK
Jacksonville → New York → Houston
Timetable, New York time
18:00B6 478 from Jacksonville at the gate
13:15B6 281 to Houston leaves the gate
19 h 15 apart on the timetable, overnight
B6 281 leaves 19 h 15 after B6 478 arrives on the timetable: more than half a day, so not a connection we count.