UA 4863 then UA 6086 at Houston
Lubbock → Houston → Shreveport
Timetable, Houston time
08:36UA 4863 from Lubbock at the gate
07:00UA 6086 to Shreveport leaves the gate
22 h 24 apart on the timetable, overnight
UA 6086 leaves 22 h 24 after UA 4863 arrives on the timetable: more than half a day, so not a connection we count.