Covenantal theology Book

I wanted to like this book more, but to be honest, I could not finish it. De Lubac starts by calling this work "naive" and really most of the book amounts to research notes. Chapters flash by without anything sinking in. Name after name of obscure Medieval theologians are crammed into sentences longer than the Lincoln Tunnel. Occasionally there are nuggets of truth or wisdom that made me pause. I am interested in De Lubac, but perhaps this was not the book to start with. Here are some things that I can definitively take from the book:

1. From the earliest times in Christian history the Church has been linked with the body of Christ.
2. The eucharist is also linked with the body of Christ.
3. By taking the eucharist together the Church is unified (Christified) into the body of Christ, looking more and more like Christ.
4. Christ is present in the eucharist (symbolically/spiritually/physically?). At this point I am more tending to the side of the physical presence of the mystical body of Christ, as per John 6 and other passages in scripture.