LA 6139 then UA 649 at San Francisco
Boston → San Francisco → Newark
Timetable, San Francisco time
23:58LA 6139 from Boston at the gate
22:50UA 649 to Newark leaves the gatealso VA 8194, NZ 9108
22 h 52 apart on the timetable, overnight
UA 649 leaves 22 h 52 after LA 6139 arrives on the timetable: more than half a day, so not a connection we count.