UA 1970 then UA 8187 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
15:23UA 8187 to Washington National leaves the gate
17 h 38 apart on the timetable, overnight
UA 8187 leaves 17 h 38 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.