UA 2249 then UA 3917 at Houston
Salt Lake City → Houston → Austin
Timetable, Houston time
10:53UA 2249 from Salt Lake City at the gate
07:30UA 3917 to Austin leaves the gate
20 h 37 apart on the timetable, overnight
UA 3917 leaves 20 h 37 after UA 2249 arrives on the timetable: more than half a day, so not a connection we count.