UA 2083 then UA 3237 at Houston
Quito → Houston → Mc Allen
Timetable, Houston time
05:50UA 2083 from Quito at the gate
19:45UA 3237 to Mc Allen leaves the gate
13 h 55 apart on the timetable
UA 3237 leaves 13 h 55 after UA 2083 arrives on the timetable: more than half a day, so not a connection we count.