CM 2329 then UA 3918 at San Francisco
Seattle → San Francisco → Denver
Timetable, San Francisco time
21:50CM 2329 from Seattle at the gate
21:45UA 3918 to Denver leaves the gate
23 h 55 apart on the timetable, overnight
UA 3918 leaves 23 h 55 after CM 2329 arrives on the timetable: more than half a day, so not a connection we count.