F9 4968 then DL 3876 at Denver
Las Vegas → Denver → Austin
Timetable, Denver time
09:48F9 4968 from Las Vegas at the gate
09:42DL 3876 to Austin leaves the gate
23 h 54 apart on the timetable, overnight
DL 3876 leaves 23 h 54 after F9 4968 arrives on the timetable: more than half a day, so not a connection we count.