AC 4531 then UA 2168 at San Francisco
Sacramento → San Francisco → Houston
Timetable, San Francisco time
15:29AC 4531 from Sacramento at the gate
05:00UA 2168 to Houston leaves the gatealso VA 8084, NZ 9198
13 h 31 apart on the timetable, overnight
UA 2168 leaves 13 h 31 after AC 4531 arrives on the timetable: more than half a day, so not a connection we count.