I thought that was rather interesting! Of course it makes sense since the Canon of the Bible came from Tradition, and it also makes sense since the Scriptures and Tradition are united as the Word of God. And it even lines up, I think, with the Hypostatic Union of Jesus: His Humanity and Divinity are united in His Divine Person, the Scriptures and Tradition are united in the Sacred Tradition.
THE RELATIONSHIP BETWEEN TRADITION AND SACRED SCRIPTURE
One common source. . .
CCC 80 “Sacred Tradition and Sacred Scripture, then, are bound closely together, and communicate one with the other. For both of them, flowing out from the same divine well-spring, come together in some fashion to form one thing, and move towards the same goal.” Each of them makes present and fruitful in the Church the mystery of Christ, who promised to remain with his own “always, to the close of the age”.
. . . two distinct modes of transmission
CCC 81 “Sacred Scripture is the speech of God as it is put down in writing under the breath of the Holy Spirit.”
“And [Holy] Tradition transmits in its entirety the Word of God which has been entrusted to the apostles by Christ the Lord and the Holy Spirit. It transmits it to the successors of the apostles so that, enlightened by the Spirit of truth, they may faithfully preserve, expound and spread it abroad by their preaching.”
CCC 82 As a result the Church, to whom the transmission and interpretation of Revelation is entrusted, “does not derive her certainty about all revealed truths from the holy Scriptures alone. Both Scripture and Tradition must be accepted and honored with equal sentiments of devotion and reverence.”
Thanks for pointing out the CCC references. They will come in handy