UA 3905 then AA 5132 at Houston
Cancún → Houston → Dallas-Fort Worth
Timetable, Houston time
13:29UA 3905 from Cancún at the gate
05:00AA 5132 to Dallas-Fort Worth leaves the gate
15 h 31 apart on the timetable, overnight
AA 5132 leaves 15 h 31 after UA 3905 arrives on the timetable: more than half a day, so not a connection we count.