How long is flight from Durban South Africa to Sydney Australia?

A random search for flights from Dubai (DXB) To Durban (DUR) shows:

OPTION 1: 8hr 45min Nonstop

DXB - DUR Emirates Airlines Flt 775 Dep 10:25am 29Apr,Thu

Flight Duration: 8hr 45min

OPTION 2: 11hr 20min via Johannesburg (JNB) [Cheaper Option]

DXB - JNB South African Airways Flt 7159 Dep 04:40am 29Apr,Thu

Operated by Emirates Airlines

JNB - DUR South African Airlines Flt 555 Dep 12:55pm 29Apr,Thu

Flight Duration: 9hr 15min; Layover Time: 2hr 05min; Total Trip Time: 11hr 20min