UA 477 then UA 6086 at Houston
Memphis → Houston → Shreveport
Timetable, Houston time
08:28UA 477 from Memphis at the gate
07:00UA 6086 to Shreveport leaves the gate
22 h 32 apart on the timetable, overnight
UA 6086 leaves 22 h 32 after UA 477 arrives on the timetable: more than half a day, so not a connection we count.