B6 2901 then DL 1915 at JFK
Buffalo → New York → Los Angeles
Timetable, New York time
18:30B6 2901 from Buffalo at the gate
18:00DL 1915 to Los Angeles leaves the gate
23 h 30 apart on the timetable, overnight
DL 1915 leaves 23 h 30 after B6 2901 arrives on the timetable: more than half a day, so not a connection we count.