BR 620 then UA 505 at LAX
Taipei → Los Angeles → Las Vegas
Timetable, Los Angeles time
01:37BR 620 from Taipei at the gate
13:42UA 505 to Las Vegas leaves the gate
12 h 05 apart on the timetable
UA 505 leaves 12 h 05 after BR 620 arrives on the timetable: more than half a day, so not a connection we count.