WN 196 then DL 3876 at Denver
Oakland → Denver → Austin
Timetable, Denver time
11:55WN 196 from Oakland at the gate
09:42DL 3876 to Austin leaves the gate
21 h 47 apart on the timetable, overnight
DL 3876 leaves 21 h 47 after WN 196 arrives on the timetable: more than half a day, so not a connection we count.