AA 2290 then AA 1225 at Miami
Nashville → Miami → Boston
Timetable, Miami time
09:25AA 2290 from Nashville at the gate
09:13AA 1225 to Boston leaves the gate
23 h 48 apart on the timetable, overnight
AA 1225 leaves 23 h 48 after AA 2290 arrives on the timetable: more than half a day, so not a connection we count.