UA 3011 then AA 1848 at Houston
São Paulo → Houston → Dallas-Fort Worth
Timetable, Houston time
06:36UA 3011 from São Paulo at the gate
18:56AA 1848 to Dallas-Fort Worth leaves the gate
12 h 20 apart on the timetable
AA 1848 leaves 12 h 20 after UA 3011 arrives on the timetable: more than half a day, so not a connection we count.