B6 616 then AA 4364 at JFK
San Francisco → New York → Boston
Timetable, New York time
08:30B6 616 from San Francisco at the gate
08:10AA 4364 to Boston leaves the gate
23 h 40 apart on the timetable, overnight
AA 4364 leaves 23 h 40 after B6 616 arrives on the timetable: more than half a day, so not a connection we count.