UA 1898 then UA 3755 at Houston
Baltimore → Houston → Lubbock
Timetable, Houston time
08:37UA 1898 from Baltimore at the gate
22:10UA 3755 to Lubbock leaves the gate
13 h 33 apart on the timetable
UA 3755 leaves 13 h 33 after UA 1898 arrives on the timetable: more than half a day, so not a connection we count.