AA 349 then AA 6238 at DFW
Key West → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
16:42AA 349 from Key West at the gate
08:25AA 6238 to Amarillo leaves the gate
15 h 43 apart on the timetable, overnight
AA 6238 leaves 15 h 43 after AA 349 arrives on the timetable: more than half a day, so not a connection we count.