Afterall, it is He that inspired the text also inspires the teacher and the reader alike.
Indeed yes, and so He is also the author of the Sacred Tradition, which both produced the text, and gives the lens through which it is to be interpreted.
Yes oral conveyance by apostles/disciples could be equal but certainly writ is more comprehensive and the promise to bring all things to remembrance is sealed
Yet the documents of the NT were never intended to be a full compendium of the faith, which was committed to the Church. Jesus did not write, nor did He command the authors to write (except John the Revelation).
You are not really saying sola scriptura means without Holy Spirit
No, this is not the teaching of the Church. But that those writings were never intended to be separated from the Sacred Tradition that produced them. When they are, the interpretation of them changes to such a vast extent that “a different gospel” can be produced.
It would be wrong to suggest that because Writ tells us of Christ privately teaching disciples at times, that therefore some teachings may not be in Writ also.
Those who espouse Sola Scriptura must espouse this view, though it is false. But, if you can demonstrate from the Writings what Paul spoke about in Tyrannus, or ANYTHING from the 40 days between the Resurrection and the Ascention, I would be happy to hear it!
8 And he entered the synagogue and for three months spoke boldly, arguing and pleading about the kingdom of God; 9 but when some were stubborn and disbelieved, speaking evil of the Way before the congregation, he withdrew from them, taking the disciples with him, and argued daily in the hall of Tyran′nus.[a] 10 T
his continued for two years, so that all the residents of Asia heard the word of the Lord, both Jews and Greeks. Acts 19
Acts 1:3
3 To them he presented himself alive after his passion by many proofs, appearing to them
during forty days, and speaking of the kingdom of God.
This is partly what gnostics wrongly charged.
They rightly asserted that there were teachings that were not written. It was Sacred Tradition that defeated them, since the contents of the NT had not yet been discerned. If Sacred Tradition were not the Word of God, then we would have a Gnostic Church today.