F9 685 then WN 1823 at Denver
Washington National → Denver → Sacramento
Timetable, Denver time
09:16F9 685 from Washington National at the gate
21:20WN 1823 to Sacramento leaves the gate
12 h 04 apart on the timetable
WN 1823 leaves 12 h 04 after F9 685 arrives on the timetable: more than half a day, so not a connection we count.