You did not answer my question:
Is the Father the Son?
And He who sent Me is with Me.
Sounds like they are inseparable in some unique way, does it not?
Now you answer.
[Is the Father the Son?]
I'll answer this your question on biblical authority.
No. The Father is not the Son and the Son is not the Father and not the Holy Spirit either. All three persons are distinct persons and all three are ONE Elohim, the uni plural name of God. That is, these three are one.
Hence, in Jesus dwellith all the fulness of the Godhead, as the pauline epistles revealed to Paul the Apostle by the revelations of Jesus Christ teach.