How many hours is the flight from France to Melbourne?

A random search for flights from Paris (CDG) to Melbourne (MEL) shows:

OPTION 1: 21hr 20min via Doha (DOH)
CDG - DOH Qatar Airways Flt 20 Dep 03:05pm 15Jan,Fri
DOH - MEL Qatar Airways Flt 30 Dep 12:45am 16Jan,Sat
Flight Duration: 20hr 00min; Layover Time: 1hr 20min; Total Trip Time: 21hr 20min

OPTION 2: 22hr 15min via Abu Dhabi (AUH)
CDG - AUH Etihad Airways Flt 032 Dep 11:00am 15Jan,Fri
AUH - MEL Etihad Airways Flt 460 Dep 10:35pm 15Jan,Fri
Flight Duration: 20hr 25min; Layover Time: 1hr 50min; Total Trip Time: 22hr 15min