B6 1524 then B6 1602 at JFK
Los Angeles → New York → Buffalo
Timetable, New York time
07:03B6 1524 from Los Angeles at the gate
06:59B6 1602 to Buffalo leaves the gate
23 h 56 apart on the timetable, overnight
B6 1602 leaves 23 h 56 after B6 1524 arrives on the timetable: more than half a day, so not a connection we count.