That doesn't prove Jesus spoke to Moses. As the Father by the Holy Spirit could state I AM.
This is the Father to me, "Then he said, “I am the God of your fathers, the God of Abraham, the God of Isaac and the God of Jacob.” At this, Moses hid his face, because he was afraid to look at God.
He stays with God through a angel as is in the text. No mention of God through Jesus and acts 7 has the context of God the Father to me.
Acts 7 35-36
“This is the same Moses they had rejected with the words, ‘Who made you ruler and judge?’ He was sent to be their ruler and deliverer by God himself, through the angel who appeared to him in the bush. 36 He led them out of Egypt and performed wonders and signs in Egypt, at the Red Sea and for forty years in the wilderness.