DL 676 then B6 1602 at JFK
Los Angeles → New York → Buffalo
Timetable, New York time
06:45DL 676 from Los Angeles at the gate
06:44B6 1602 to Buffalo leaves the gate
23 h 59 apart on the timetable, overnight
B6 1602 leaves 23 h 59 after DL 676 arrives on the timetable: more than half a day, so not a connection we count.