CA 7304 then UA 3912 at San Francisco
San Diego → San Francisco → Houston
Timetable, San Francisco time
09:20CA 7304 from San Diego at the gate
23:00UA 3912 to Houston leaves the gate
13 h 40 apart on the timetable
UA 3912 leaves 13 h 40 after CA 7304 arrives on the timetable: more than half a day, so not a connection we count.