B6 616 then B6 1381 at JFK
San Francisco → New York → Houston
Timetable, New York time
08:30B6 616 from San Francisco at the gate
08:00B6 1381 to Houston leaves the gate
23 h 30 apart on the timetable, overnight
B6 1381 leaves 23 h 30 after B6 616 arrives on the timetable: more than half a day, so not a connection we count.