AA 840 then AA 6238 at DFW
New York LaGuardia → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
14:36AA 840 from New York LaGuardia at the gate
08:25AA 6238 to Amarillo leaves the gate
17 h 49 apart on the timetable, overnight
AA 6238 leaves 17 h 49 after AA 840 arrives on the timetable: more than half a day, so not a connection we count.