B6 2033 then UA 3917 at Houston
Boston → Houston → Austin
Timetable, Houston time
13:19B6 2033 from Boston at the gate
07:30UA 3917 to Austin leaves the gate
18 h 11 apart on the timetable, overnight
UA 3917 leaves 18 h 11 after B6 2033 arrives on the timetable: more than half a day, so not a connection we count.