B6 623 then DL 2457 at LAX
New York JFK → Los Angeles → Portland (Oregon)
Timetable, Los Angeles time
18:46B6 623 from New York JFK at the gate
18:30DL 2457 to Portland (Oregon) leaves the gate
23 h 44 apart on the timetable, overnight
DL 2457 leaves 23 h 44 after B6 623 arrives on the timetable: more than half a day, so not a connection we count.