CZ 1604 then UA 2436 at San Francisco
Los Angeles → San Francisco → Denver
Timetable, San Francisco time
23:40CZ 1604 from Los Angeles at the gatealso AA 3176, AY 4048, QF 4743, EI 7533
18:35UA 2436 to Denver leaves the gatealso AC 5416, VA 8341, NZ 9062
18 h 55 apart on the timetable, overnight
UA 2436 leaves 18 h 55 after CZ 1604 arrives on the timetable: more than half a day, so not a connection we count.