AA 2290 then UA 2045 at Miami
Nashville → Miami → Denver
Timetable, Miami time
09:25AA 2290 from Nashville at the gate
07:30UA 2045 to Denver leaves the gate
22 h 05 apart on the timetable, overnight
UA 2045 leaves 22 h 05 after AA 2290 arrives on the timetable: more than half a day, so not a connection we count.