DL 2368 then AA 6256 at O'Hare
Los Angeles → Chicago → Sioux Falls
Timetable, Chicago time
17:50DL 2368 from Los Angeles at the gate
16:47AA 6256 to Sioux Falls leaves the gate
22 h 57 apart on the timetable, overnight
AA 6256 leaves 22 h 57 after DL 2368 arrives on the timetable: more than half a day, so not a connection we count.