Yes but in other instances when Jesus was speaking figuratively he would clarify what he was saying. Explaining parables was one example. However Jesus did not do that in John 6. Jesus did not tell his disciples to come back and explain what he “really” meant. No, that is because he was speaking literally here.
By the way He did not say this is my body and bread mixed together. It sure sounds like Jesus wanted no part of consubstantiation - transubstantion only.
Sure He did. He said: John 6:63 It is the Spirit who gives life; the flesh is no help at all. The words that I have spoken to you are spirit and life.