UA 1970 then AA 9356 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
13:51AA 9356 to Seattle leaves the gate
16 h 06 apart on the timetable, overnight
AA 9356 leaves 16 h 06 after UA 1970 arrives on the timetable: more than half a day, so not a connection we count.