AA 3709 then AA 766 at DFW
Tampico → Dallas-Fort Worth → Tucson
Timetable, Dallas-Fort Worth time
18:06AA 3709 from Tampico at the gate
17:42AA 766 to Tucson leaves the gate
23 h 36 apart on the timetable, overnight
AA 766 leaves 23 h 36 after AA 3709 arrives on the timetable: more than half a day, so not a connection we count.