AA 4090 then AA 6238 at DFW
Tampico → Dallas-Fort Worth → Amarillo
Timetable, Dallas-Fort Worth time
17:10AA 4090 from Tampico at the gate
08:25AA 6238 to Amarillo leaves the gate
15 h 15 apart on the timetable, overnight
AA 6238 leaves 15 h 15 after AA 4090 arrives on the timetable: more than half a day, so not a connection we count.