AA 2876 then UA 5344 at O'Hare
Charleston (South Carolina) → Chicago → Spokane
Timetable, Chicago time
09:00AA 2876 from Charleston (South Carolina) at the gate
08:40UA 5344 to Spokane leaves the gate
23 h 40 apart on the timetable, overnight
UA 5344 leaves 23 h 40 after AA 2876 arrives on the timetable: more than half a day, so not a connection we count.