AGAIN, dogmatic magisterial teaching of the Church consists of A. The Pope + B. General Councils + C. Ordinary magisterium. All 3 components are considered infallible. It's right there in black and white above, docuмented from the First Vatican Council. You already have your "highest magisterial authority". Open your eyes!
You seem to think that you can treat your non-doctrine of the mythical non-sacrament, a BOD, without any reference whatsoever to any other doctrine.
Only the sacrament enjoys the teaching of the UOM which agrees with infallible definitions as well as the literal words of Our Lord. This is how we know that the sacrament is a part of the deposit of faith. Every single saint, father, theologian, doctor, catechism and etc. teach and have always taught what the sacrament is and that it is a necessity for every human being - this teaching is constant even among those authorities who also teach of a BOD.
Your real problem is that you do not admit that the mythical non-sacrament on the other hand, only has *some* teachers, but *a near universal following* of believers. This is how you think a BOD is a universal teaching, when the truth is that it is nearly universally believed.
A BOD is not a part of the deposit of faith because regardless of the fact that a BOD has never been defined, the overwhelming majority of Fathers, saints and theologians never taught it - and it contradicts that which has been defined infallibly.
If a BOD were a teaching of the UOM, there would be a singular universal understanding of what it even is. For example, the sacrament of baptism has a formula that the whole world, even non-Catholics understand - and have always understood since the time of the Apostles.
The mythical non-sacrament, a BOD on the other hand, has as many different formulas as there are protestant sects - this fact is indefensible. This fact proves that a BOD is not a part of the deposit of faith. This fact condemn the whole idea that a BOD is de fide.
Now please, do your duty and defend your doctrine of a BOD by providing it's complete formula once and for all! This should be interesting - will see how long before all the BODers end up debating amongst themselves.