CM 2528 then UA 2831 at San Francisco
Ontario → San Francisco → Houston
Timetable, San Francisco time
20:10CM 2528 from Ontario at the gatealso AC 4112
14:30UA 2831 to Houston leaves the gate
18 h 20 apart on the timetable, overnight
UA 2831 leaves 18 h 20 after CM 2528 arrives on the timetable: more than half a day, so not a connection we count.