UA 5664 then UA 6086 at Houston
Amarillo → Houston → Shreveport
Timetable, Houston time
11:03UA 5664 from Amarillo at the gate
07:00UA 6086 to Shreveport leaves the gate
19 h 57 apart on the timetable, overnight
UA 6086 leaves 19 h 57 after UA 5664 arrives on the timetable: more than half a day, so not a connection we count.