Y4 730 then UA 3755 at Houston
Mexico City → Houston → Lubbock
Timetable, Houston time
08:04Y4 730 from Mexico City at the gate
22:10UA 3755 to Lubbock leaves the gate
14 h 06 apart on the timetable
UA 3755 leaves 14 h 06 after Y4 730 arrives on the timetable: more than half a day, so not a connection we count.