UA 438 then UA 3237 at Houston
Georgetown (Guyana) → Houston → Mc Allen
Timetable, Houston time
06:14UA 438 from Georgetown (Guyana) at the gate
19:45UA 3237 to Mc Allen leaves the gate
13 h 31 apart on the timetable
UA 3237 leaves 13 h 31 after UA 438 arrives on the timetable: more than half a day, so not a connection we count.