AA 3866 then AA 6238 at DFW
Merida → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
18:05AA 3866 from Merida at the gate
08:25AA 6238 to Amarillo leaves the gate
14 h 20 apart on the timetable, overnight
AA 6238 leaves 14 h 20 after AA 3866 arrives on the timetable: more than half a day, so not a connection we count.