UA 2168 then UA 6086 at Houston
San Francisco → Houston → Shreveport
Timetable, Houston time
10:49UA 2168 from San Francisco at the gate
07:00UA 6086 to Shreveport leaves the gate
20 h 11 apart on the timetable, overnight
UA 6086 leaves 20 h 11 after UA 2168 arrives on the timetable: more than half a day, so not a connection we count.