UA 2863 then UA 3917 at Houston
Sacramento → Houston → Austin
Timetable, Houston time
11:07UA 2863 from Sacramento at the gate
07:30UA 3917 to Austin leaves the gate
20 h 23 apart on the timetable, overnight
UA 3917 leaves 20 h 23 after UA 2863 arrives on the timetable: more than half a day, so not a connection we count.