AA 2896 then AA 3603 at DFW
Chicago O'Hare → Dallas-Fort Worth → Tampico
Timetable, Dallas-Fort Worth time
00:43AA 2896 from Chicago O'Hare at the gate
12:45AA 3603 to Tampico leaves the gate
12 h 02 apart on the timetable
AA 3603 leaves 12 h 02 after AA 2896 arrives on the timetable: more than half a day, so not a connection we count.