CM 2398 then CX 7996 at San Francisco
Pasco → San Francisco → Seattle
Timetable, San Francisco time
16:03CM 2398 from Pasco at the gatealso UA 5578
10:39CX 7996 to Seattle leaves the gate
18 h 36 apart on the timetable, overnight
CX 7996 leaves 18 h 36 after CM 2398 arrives on the timetable: more than half a day, so not a connection we count.