Did you miss what I wrote about that verse in a previous post? Do you even understand that the context of Hebrews chapter one is discussing the throne of David that Christ was given? Do you understand that the companions talked about were the line of earthly kings that had sat on that throne over God's people? Do you not understand that God never spoke that way to an angel because it was to men that he spoke it?
Doesn't really matter what the historical events were. The facts are that God the Father called the Son.... GOD!