UA 3761 then CA 818 at Dulles
Clarksburg → Washington → Beijing
Timetable, Washington time
07:09UA 3761 from Clarksburg at the gate
22:00CA 818 to Beijing leaves the gate
14 h 51 apart on the timetable
CA 818 leaves 14 h 51 after UA 3761 arrives on the timetable: more than half a day, so not a connection we count.