B6 917 then CI 5311 at JFK
Boston → New York → Anchorage
Timetable, New York time
08:30B6 917 from Boston at the gate
06:40CI 5311 to Anchorage leaves the gate
22 h 10 apart on the timetable, overnight
CI 5311 leaves 22 h 10 after B6 917 arrives on the timetable: more than half a day, so not a connection we count.