CM 2398 then CX 7858 at San Francisco
Pasco → San Francisco → Seattle
Timetable, San Francisco time
16:03CM 2398 from Pasco at the gatealso UA 5578
08:33CX 7858 to Seattle leaves the gate
16 h 30 apart on the timetable, overnight
CX 7858 leaves 16 h 30 after CM 2398 arrives on the timetable: more than half a day, so not a connection we count.