AA 3709 then AA 1573 at DFW
Tampico → Dallas-Fort Worth → Chicago O'Hare
Timetable, Dallas-Fort Worth time
18:06AA 3709 from Tampico at the gate
17:54AA 1573 to Chicago O'Hare leaves the gate
23 h 48 apart on the timetable, overnight
AA 1573 leaves 23 h 48 after AA 3709 arrives on the timetable: more than half a day, so not a connection we count.