I have given several rundowns of John 6 that are every bit as substantial for as against real presence from John 6 and it's only been recently that the RCC have been using it to counter that distinction. But here's another aspect too...
His work as redeemer
John 6:35
Then Jesus declared, “I am the bread of life. Whoever comes to me will never go hungry, and whoever believes in me will never be thirsty.
His flesh is life. As the lamb of God He feeds and redeems, before the fall as the tree of life he was just for feeding on. Then in dying for us He gave His flesh so that we could have life. Blood is also necessary for redemption. Separating the flesh and blood John 6:54 clearly means His death.
John 6:47
Very truly I tell you, the one who believes has eternal life.
John 1:12
Yet to all who did receive him, to those who believed in his name, he gave the right to become children of God—
John 6:56 is the resurrected life of those who believe in Him.
By eating (gaining our edification from ) we are taking Him in as nourishment for the new creation for the new way of life.
John 14:19-20
Before long, the world will not see me anymore, but you will see me. Because I live, you also will live. 20 On that day you will realize that I am in my Father, and you are in me, and I am in you.
John 6:62 involves His ascension which followed redemption as proof His work had been completed.
Hebrews 1:3b
... After he had provided purification for sins, he sat down at the right hand of the Majesty in heaven.
Wherefore He is the life-giving spirit John 6:63 who gives life and speaks in spirit and life.
1 Corinthians 15:45
So it is written: “The first man Adam became a living being”; the last Adam, a life-giving spirit.
As the life-giving spirit He is the life supply. Receiving (believing) Him as the crucified and resurrected savior, the lifegiving Spirit comes into us to impart eternal life. We receive (believe) the Lord Jesus but we get the Holy Spirit who gives us life.
Communion in the way of breaking of bread was the way in which the earliest church recognized Jesus, as exemplified by the couple of disciples at Emmuas. Communion is recognition of Jesus Christ within the revealed Word of God, symbolically, in spirit and truth.