F9 4346 then UA 504 at Denver
Los Angeles → Denver → San Francisco
Timetable, Denver time
17:35F9 4346 from Los Angeles at the gate
16:34UA 504 to San Francisco leaves the gate
22 h 59 apart on the timetable, overnight
UA 504 leaves 22 h 59 after F9 4346 arrives on the timetable: more than half a day, so not a connection we count.