CM 1890 then CM 1472 at San Francisco
Las Vegas → San Francisco → Seattle
Timetable, San Francisco time
21:18CM 1890 from Las Vegas at the gate
21:05CM 1472 to Seattle leaves the gatealso UA 5579
23 h 47 apart on the timetable, overnight
CM 1472 leaves 23 h 47 after CM 1890 arrives on the timetable: more than half a day, so not a connection we count.