AA 2282 then DL 3876 at Denver
Philadelphia → Denver → Austin
Timetable, Denver time
11:22AA 2282 from Philadelphia at the gate
09:42DL 3876 to Austin leaves the gate
22 h 20 apart on the timetable, overnight
DL 3876 leaves 22 h 20 after AA 2282 arrives on the timetable: more than half a day, so not a connection we count.