UA 3236 then UA 701 at Houston
Mc Allen → Houston → San Juan
Timetable, Houston time
20:10UA 3236 from Mc Allen at the gate
15:05UA 701 to San Juan leaves the gate
18 h 55 apart on the timetable, overnight
UA 701 leaves 18 h 55 after UA 3236 arrives on the timetable: more than half a day, so not a connection we count.