During superreading you will be going too fast to hear the words in groups though one word here and there might jump up. I hear them as possible cues for dipping. When actually dipping you are reading and if you hear the words in your head that's fine. Just remember to only read a phrase or sentence or two and move on quickly.
Superread faster if you're hearing too many words. When skittering I hear words here and there I don't hear every word on the page only those that seem important.
It's okay to hear words it does help comprehension as you've found but not everything is important so just superread fast enough that you don't try to say every word.
Alex