UA 575 then UA 6086 at Houston
New York LaGuardia → Houston → Shreveport
Timetable, Houston time
09:10UA 575 from New York LaGuardia at the gate
07:00UA 6086 to Shreveport leaves the gate
21 h 50 apart on the timetable, overnight
UA 6086 leaves 21 h 50 after UA 575 arrives on the timetable: more than half a day, so not a connection we count.