MU 8665 then B6 1234 at San Francisco
New York JFK → San Francisco → Boston
Timetable, San Francisco time
22:42MU 8665 from New York JFK at the gate
14:50B6 1234 to Boston leaves the gate
16 h 08 apart on the timetable, overnight
B6 1234 leaves 16 h 08 after MU 8665 arrives on the timetable: more than half a day, so not a connection we count.