CZ 1604 then UA 1812 at San Francisco
Los Angeles → San Francisco → Portland (Oregon)
Timetable, San Francisco time
23:40CZ 1604 from Los Angeles at the gatealso AA 3176, AY 4048, QF 4743, EI 7533
16:32UA 1812 to Portland (Oregon) leaves the gatealso AC 3336, AZ 4500, EK 6375, LH 7690, VA 8454, NZ 9342
16 h 52 apart on the timetable, overnight
UA 1812 leaves 16 h 52 after CZ 1604 arrives on the timetable: more than half a day, so not a connection we count.