AA 490 then AA 1484 at DFW
Tucson → Dallas-Fort Worth → Nashville
Timetable, Dallas-Fort Worth time
08:41AA 490 from Tucson at the gate
20:45AA 1484 to Nashville leaves the gate
12 h 04 apart on the timetable
AA 1484 leaves 12 h 04 after AA 490 arrives on the timetable: more than half a day, so not a connection we count.