UA 2074 then UA 3755 at Houston
Miami → Houston → Lubbock
Timetable, Houston time
08:30UA 2074 from Miami at the gate
22:10UA 3755 to Lubbock leaves the gate
13 h 40 apart on the timetable
UA 3755 leaves 13 h 40 after UA 2074 arrives on the timetable: more than half a day, so not a connection we count.