AA 1263 then AA 1254 at DFW
Boise → Dallas-Fort Worth → Nashville
Timetable, Dallas-Fort Worth time
11:15AA 1263 from Boise at the gate
07:30AA 1254 to Nashville leaves the gate
20 h 15 apart on the timetable, overnight
AA 1254 leaves 20 h 15 after AA 1263 arrives on the timetable: more than half a day, so not a connection we count.