How long is the flight from Kuala Lumpur to Rio de Janeiro?

A random search for flights from Rome Fiumicino (FCO) to Perth (PER) shows: OPTION 1: 20hr 00min via Dubai (DXB)

FCO - DXB Emirates Airlines Flt 098 Dep 03:25pm 07Aug,Fri

DXB - PER Emirates Airlines Flt 420 Dep 02:35am 08Aug,Sat

Flight Duration: 16hr 30min; Layover Time: 3hr 30min; Total Trip Time: 20hr 00min OPTION 2: 19hr 15min via Kuala Lumpur (KUL)

FCO - KUL Malaysia Airlines Flt 015 Dep 01:45pm 07Aug,Fri

KUL - PER Malaysia Airlines Flt 125 Dep 09:40am 08Aug,sat

Flight Duration: 17hr 20min; Layover Time: 1hr 55min; Total Trip Time: 19hr 15min