DL 2368 then AA 428 at O'Hare
Los Angeles → Chicago → Portland (Oregon)
Timetable, Chicago time
17:50DL 2368 from Los Angeles at the gate
17:05AA 428 to Portland (Oregon) leaves the gate
23 h 15 apart on the timetable, overnight
AA 428 leaves 23 h 15 after DL 2368 arrives on the timetable: more than half a day, so not a connection we count.