Board Thread:Versus Debates/@comment-5936871-20160126112547/@comment-26369387-20160205100207

...Did you even read manga? While Nagato was using Human Path on Naruto, he also used Preta Path to absorb Naruto's Rasengan and Asura Path to block B's attack.

So I don't know who told you that Nagato can't use Paths simultaneously, but that person is wrong.