In his 1968 Apostolic Letter
Credo of the People of God, Pope Paul VI says:
26. The unique and indivisible existence of the Lord glorious in heaven is not multiplied, but is rendered present by the sacrament in the many places on earth where Mass is celebrated. And this existence remains present, after the sacrifice, in the Blessed Sacrament which is, in the tabernacle, the living heart of each of our churches. And it is our very sweet duty to honor and adore in the blessed Host which our eyes see, the Incarnate Word whom they cannot see, and who, without leaving heaven, is made present before us.
The only thing that makes sense to me is that the consecrated bread and wine become some kind of portals or wormholes directly into heaven where Jesus is in glory.