LA 6139 then BR 27 at San Francisco
Boston → San Francisco → Taipei
Timetable, San Francisco time
00:24LA 6139 from Boston at the gate
23:30BR 27 to Taipei leaves the gatealso AV 4510, TG 6255, CM 8014
23 h 06 apart on the timetable
BR 27 leaves 23 h 06 after LA 6139 arrives on the timetable: more than half a day, so not a connection we count.