UA 1970 then UA 8105 at San Francisco
Cleveland → San Francisco → Seattle
Timetable, San Francisco time
21:45UA 1970 from Cleveland at the gatealso VA 8489, NZ 9046, OZ 9526
13:06UA 8105 to Seattle leaves the gate
15 h 21 apart on the timetable, overnight
UA 8105 leaves 15 h 21 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.