BR 620 then DL 2551 at LAX
Taipei → Los Angeles → Portland (Oregon)
Timetable, Los Angeles time
01:37BR 620 from Taipei at the gate
14:00DL 2551 to Portland (Oregon) leaves the gate
12 h 23 apart on the timetable
DL 2551 leaves 12 h 23 after BR 620 arrives on the timetable: more than half a day, so not a connection we count.