UA 128 then UA 3755 at Houston
Rio De Janeiro → Houston → Lubbock
Timetable, Houston time
05:45UA 128 from Rio De Janeiro at the gate
22:10UA 3755 to Lubbock leaves the gate
16 h 25 apart on the timetable
UA 3755 leaves 16 h 25 after UA 128 arrives on the timetable: more than half a day, so not a connection we count.