Four Way Handshake. How many ways ?

[henke1k]

Hello guys, how many ways is necessary of the 4-way handshake to be able brute-force it ?

I made a research and some guys tells that 2 ways (1,2 ) is enought, but other guys tells that at least 3 ways of 4.

Could you tell me how many ways is necessary for Hashcat-plus
and the Max lenght password can i do with it ?

Thanks Dudes.

[Mem5]

The Access Point construct the PTK on the exchange n°3. The last exchange (n°4) is only an ACKnowledgement from the station to the AP.
I think (but I need confirmation) that this ACK is not mandatory.

[henke1k]

But i need all of them or unless 1,2,3 at .cap to start a brute-force.