UA 1601 then AA 3745 at Houston
Tulum → Houston → Dallas-Fort Worth
Timetable, Houston time
18:18UA 1601 from Tulum at the gate
19:14AA 3745 to Dallas-Fort Worth leaves the gate
56 min apart on the timetable
The last days
UA 1601 and AA 3745 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.