AA 2290 then UA 2384 at Miami
Nashville → Miami → Chicago O'Hare
Timetable, Miami time
09:25AA 2290 from Nashville at the gate
08:51UA 2384 to Chicago O'Hare leaves the gate
23 h 26 apart on the timetable, overnight
UA 2384 leaves 23 h 26 after AA 2290 arrives on the timetable: more than half a day, so not a connection we count.