UA 3236 then UA 1090 at Houston
Midland → Houston → Mexico City
Timetable, Houston time
18:30UA 3236 from Midland at the gate
14:25UA 1090 to Mexico City leaves the gate
19 h 55 apart on the timetable, overnight
UA 1090 leaves 19 h 55 after UA 3236 arrives on the timetable: more than half a day, so not a connection we count.