B6 1901 then BR 635 at JFK
Buffalo → New York → Anchorage
Timetable, New York time
13:35B6 1901 from Buffalo at the gate
12:50BR 635 to Anchorage leaves the gate
23 h 15 apart on the timetable, overnight
BR 635 leaves 23 h 15 after B6 1901 arrives on the timetable: more than half a day, so not a connection we count.