UA 2301 then AA 1502 at Charlotte
Newark → Charlotte → Nashville
Timetable, Charlotte time
21:41UA 2301 from Newark at the gate
20:05AA 1502 to Nashville leaves the gate
22 h 24 apart on the timetable, overnight
AA 1502 leaves 22 h 24 after UA 2301 arrives on the timetable: more than half a day, so not a connection we count.