If the Baptism of Desire and Blood isn't Church teaching then why was Fr Feeney excommunicated in 1953? Why did he not obey the summons to Rome to explain his position?
Fr. Feeney was "excommunicated" for disobedience, not for what he was teaching. He did not "obey" his summons because it was not in accord with canon law.
If BOD is Church teaching it should be easy for you to find one (1) Council teaching it or one (1) Pope teaching it to the universal Church
Define the matter and form of BOD, or find where the Church has defined them..because the Church teaches that the Sacraments (at least one, Baptism) are necessary for salvation, that the sacraments consist of matter, form, and intention, and the Church
also teaches that the matter of the Sacrament of Baptism is true and natural water, without which the sacrament is not effected.
Canon 737
§ 1. Baptism, the gateway and foundation of the Sacraments, ACTUALLY or at least in DESIRE is
necessary for all for salvation and is not validly conferred except by washing with true and natural
water along with the prescribed formula of words.
So without Baptism there can be no salvation, we agree on that. But the Church also provides the means to salvation as shown in Canon Law.
Canon law is not infallible and is
certainly not intended to teach the Faith, it is for the governance of the Church
Read Pope St. Leo the Great's dogmatic letter that I posted. Justification is inseparable from the waters of baptism (the Sacrament)