UA 4301 then UA 5340 at Houston
Lubbock → Houston → Tuxtla Gutierrez
Timetable, Houston time
18:41UA 4301 from Lubbock at the gate
09:50UA 5340 to Tuxtla Gutierrez leaves the gate
15 h 09 apart on the timetable, overnight
UA 5340 leaves 15 h 09 after UA 4301 arrives on the timetable: more than half a day, so not a connection we count.