FI 7890 then B6 1034 at San Francisco
New York JFK → San Francisco → Boston
Timetable, San Francisco time
09:34FI 7890 from New York JFK at the gate
06:00B6 1034 to Boston leaves the gatealso EY 8006, EY 8261
20 h 26 apart on the timetable, overnight
B6 1034 leaves 20 h 26 after FI 7890 arrives on the timetable: more than half a day, so not a connection we count.