B6 115 then UA 3906 at San Francisco
New York JFK → San Francisco → Newark
Timetable, San Francisco time
09:30B6 115 from New York JFK at the gatealso LO 5771, KQ 7280
07:00UA 3906 to Newark leaves the gate
21 h 30 apart on the timetable, overnight
UA 3906 leaves 21 h 30 after B6 115 arrives on the timetable: more than half a day, so not a connection we count.