UA 1970 then UA 2386 at San Francisco
Cleveland → San Francisco → Washington National
Timetable, San Francisco time
21:45UA 1970 from Cleveland at the gatealso VA 8489, NZ 9046, OZ 9526
14:18UA 2386 to Washington National leaves the gatealso NZ 2777
16 h 33 apart on the timetable, overnight
UA 2386 leaves 16 h 33 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.