Re-reading the Bas article, I don't think he's talking about a palm hook. He says
I love palm strikes because you have a longer reach. Normally when you give a left hook and then a right straight, you are TOO close for the right straight, why? Because the hook is shorter. When you give him instead of a left hook a left palm strike, NOW your right arm (that follows) can really extend, thus has way more impact.
That looks to me like he's talking about a straight left palm strike followed by a straight right punch because a palm hook would have roughly the same range as a hook punch.