1. Notice how it does not read 'and the Holy Spirit said?' It means another Being, who was in a place the Holy Spirit was not, said the words. This other Being is God, who alone is the Father.
2. Also, do you notice how it reads the HS descended in a form - not IS or HAS a body in the shape of a bird?
3. Language Usage. Compare and Contrast: RLT63's shadow descended in bodily form, like a glove upon him. It doesn't mean an attribute of your existence, your shadow, is different person, right?
4. The plain truth is there is no 'God, The Holy Spirit' verse because that would contradict the one and only God, who we relate to as Father. Do you ever wonder why the only God explicitly identified is God the Father and why you always have to infer your doctrine from more ambiguous text?
Each specific instance of verses related to the Holy Spirit can be likewise broken down. (And I do hope you can give me a straight answer to the red underlined question.)