AA 2564 then ET 3511 at O'Hare
Los Angeles → Chicago → Muscat
Timetable, Chicago time
12:21AA 2564 from Los Angeles at the gate
09:05ET 3511 to Muscat leaves the gate
20 h 44 apart on the timetable, overnight
ET 3511 leaves 20 h 44 after AA 2564 arrives on the timetable: more than half a day, so not a connection we count.