I do not believe they are Separate at all!
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Then I saw a Lamb who appeared to have been slain, standing in the center of the throne, encircled by the four living creatures and the elders. The Lamb had seven horns and seven eyes, which represent the seven Spirits of God sent out into all the earth.
And He came and took the scroll from the right hand of the One seated on the throne.
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If they are not separate, how could Jesus as the Lamb take the scroll out of the right hand of the Father who is sitting on the throne?
another example would be that, after Jesus was baptized and came up out of the water, the sky parted and the Holy Spirit in the form of a dove, landed on Him and the voice of the Father from heaven said, "This is My Son whom I love. With you I am well pleased." This is another scripture which demonstrates that the Father and the Son are individual beings. The same example can be found when Jesus was on the mountain where after He was transfigured, where a cloud enveloped them and said, "This is My beloved Son, in whom I am well pleased. Listen to Him!” These verses show individuality.
When Jesus referred to himself as the Son of God, the Jews picked up stones to stone Him because by saying this the Jews said that He was making himself equal with God.
There are many, many more examples that I could list. But these are just something to consider.