B6 1017 then CI 5311 at JFK
Boston → New York → Anchorage
Timetable, New York time
10:59B6 1017 from Boston at the gate
06:40CI 5311 to Anchorage leaves the gate
19 h 41 apart on the timetable, overnight
CI 5311 leaves 19 h 41 after B6 1017 arrives on the timetable: more than half a day, so not a connection we count.