How do Trinitarians interpret John 14:10?

John 14:10 > Don't you believe that I am in the Father, and that the Father is in me? The words I say to you I do not speak on my own authority. Rather, it is the Father, living in me, who is doing his work. My father and pastor, who is an advocate for the Oneness position stated: >Jesus' divinity is what we call "the Father." That's why Son can say "the Father living in me does the works," since the term "Son" is used to denote the flesh or humanity of Christ. Jesus is then, both the Father and the Son." How do Trinitarians explain the meaning of this passage? How is the Father "in" Jesus yet distinct from Jesus?