CZ 1604 then UA 3912 at San Francisco
Los Angeles → San Francisco → Houston
Timetable, San Francisco time
23:40CZ 1604 from Los Angeles at the gatealso AA 3176, AY 4048, QF 4743, EI 7533
23:00UA 3912 to Houston leaves the gate
23 h 20 apart on the timetable, overnight
UA 3912 leaves 23 h 20 after CZ 1604 arrives on the timetable: more than half a day, so not a connection we count.