UA 1970 then UA 755 at San Francisco
Cleveland → San Francisco → Washington
Timetable, San Francisco time
21:45UA 1970 from Cleveland at the gatealso VA 8489, NZ 9046, OZ 9526
12:45UA 755 to Washington leaves the gatealso CA 7313, NZ 9162
15 h apart on the timetable, overnight
UA 755 leaves 15 h after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.