AA 2363 then DL 3876 at Denver
Chicago O'Hare → Denver → Austin
Timetable, Denver time
11:37AA 2363 from Chicago O'Hare at the gate
09:42DL 3876 to Austin leaves the gate
22 h 05 apart on the timetable, overnight
DL 3876 leaves 22 h 05 after AA 2363 arrives on the timetable: more than half a day, so not a connection we count.