UA 876 then UA 785 at San Francisco
Tokyo Haneda → San Francisco → Washington
Timetable, San Francisco time
11:15UA 876 from Tokyo Haneda at the gatealso NH 7010
06:15UA 785 to Washington leaves the gatealso AZ 4408, NZ 9160
19 h apart on the timetable, overnight
UA 785 leaves 19 h after UA 876 arrives on the timetable: more than half a day, so not a connection we count.