UA 3926 then B6 816 at San Francisco
Newark → San Francisco → New York JFK
Timetable, San Francisco time
22:56UA 3926 from Newark at the gate
16:25B6 816 to New York JFK leaves the gate
17 h 29 apart on the timetable, overnight
B6 816 leaves 17 h 29 after UA 3926 arrives on the timetable: more than half a day, so not a connection we count.