UA 1671 then WN 261 at Atlanta
Denver → Atlanta → Denver
Timetable, Atlanta time
18:23UA 1671 from Denver at the gate
17:35WN 261 to Denver leaves the gate
23 h 12 apart on the timetable, overnight
WN 261 leaves 23 h 12 after UA 1671 arrives on the timetable: more than half a day, so not a connection we count.