AA 3357 then UA 5940 at O'Hare
Syracuse → Chicago → Peoria
Timetable, Chicago time
18:30AA 3357 from Syracuse at the gate
16:40UA 5940 to Peoria leaves the gate
22 h 10 apart on the timetable, overnight
UA 5940 leaves 22 h 10 after AA 3357 arrives on the timetable: more than half a day, so not a connection we count.