AF 30 then UA 1254 at Atlanta
Paris Charles de Gaulle → Atlanta → Denver
Timetable, Atlanta time
15:00AF 30 from Paris Charles de Gaulle at the gate
11:14UA 1254 to Denver leaves the gate
20 h 14 apart on the timetable, overnight
UA 1254 leaves 20 h 14 after AF 30 arrives on the timetable: more than half a day, so not a connection we count.