AV 2353 then CM 1472 at San Francisco
Denver → San Francisco → Seattle
Timetable, San Francisco time
21:10AV 2353 from Denver at the gate
21:05CM 1472 to Seattle leaves the gatealso UA 5579
23 h 55 apart on the timetable, overnight
CM 1472 leaves 23 h 55 after AV 2353 arrives on the timetable: more than half a day, so not a connection we count.