AF 2384 then UA 649 at San Francisco
Boston → San Francisco → Newark
Timetable, San Francisco time
23:31AF 2384 from Boston at the gatealso DL 2919, SK 3585, LA 6228
22:50UA 649 to Newark leaves the gatealso VA 8194, NZ 9108
23 h 19 apart on the timetable, overnight
UA 649 leaves 23 h 19 after AF 2384 arrives on the timetable: more than half a day, so not a connection we count.