DL 2099 then UA 3917 at Houston
New York LaGuardia → Houston → Austin
Timetable, Houston time
12:01DL 2099 from New York LaGuardia at the gate
07:30UA 3917 to Austin leaves the gate
19 h 29 apart on the timetable, overnight
UA 3917 leaves 19 h 29 after DL 2099 arrives on the timetable: more than half a day, so not a connection we count.