DL 1307 then UA 3917 at Houston
Detroit → Houston → Austin
Timetable, Houston time
15:08DL 1307 from Detroit at the gate
07:30UA 3917 to Austin leaves the gate
16 h 22 apart on the timetable, overnight
UA 3917 leaves 16 h 22 after DL 1307 arrives on the timetable: more than half a day, so not a connection we count.