CM 2528 then UA 3911 at San Francisco
Ontario → San Francisco → Denver
Timetable, San Francisco time
20:10CM 2528 from Ontario at the gatealso AC 4112
17:00UA 3911 to Denver leaves the gate
20 h 50 apart on the timetable, overnight
UA 3911 leaves 20 h 50 after CM 2528 arrives on the timetable: more than half a day, so not a connection we count.