F9 4346 then UA 536 at Denver
Los Angeles → Denver → San José (Costa Rica)
Timetable, Denver time
17:35F9 4346 from Los Angeles at the gate
15:46UA 536 to San José (Costa Rica) leaves the gate
22 h 11 apart on the timetable, overnight
UA 536 leaves 22 h 11 after F9 4346 arrives on the timetable: more than half a day, so not a connection we count.