DL 2368 then AA 603 at O'Hare
Los Angeles → Chicago → Washington National
Timetable, Chicago time
17:50DL 2368 from Los Angeles at the gate
16:51AA 603 to Washington National leaves the gate
23 h 01 apart on the timetable, overnight
AA 603 leaves 23 h 01 after DL 2368 arrives on the timetable: more than half a day, so not a connection we count.