This is the post I first responded to: Note the bold.
“Guarantees ALL his teachings”, you said…and all his DECISIONS as he “cannot make decisions that will harm faith”, further that infallibility goes beyond dogmatic declarations. That is precisely what is “Certainly wrong and NOT a catholic teaching by any measure.

”
No. The Pope’s non-dogmatic “decisions”, including the call to discussion is NOT infallible. Only a formal dogmatic declaration, that is, a solemn proclamation of doctrine intended to bind the whole church under pain of the sin of heresy and decreed in the officially recognized way, if the pope decides to do that, will be infallible. It has already been made clear there will be NO doctrinal teaching issuing forth from the synod, only pastoral practice. Neither pastoral practice nor non-doctrinal ex-cathedra proclamations can be infallible.
Nope. Only what he teaches as a doctrine of the deposit of faith to be held by all the faithful as binding irreformable truth will be infallible. Disciplinary decisions will not belong there, though this does not mean they will be wrong. Just not infallible. Please note that not even the reasoning process leading to the dogmatic definition is infallible, nor even the arguments upon which the doctrine is finally taught. Only the final definition itself shall be infallible, if it is made, and all indications show that the pope has no intention of making a solemn definition.
No, again. Only doctrinal definitions are protected. Not pastoral decisions. Please note that Ecumenical councils in union with the popes have taught “pastoral approaches” that cannot be deemed infallible, such as requiring the faithful to burn heretics to death and take their property. Only the formal dogmatic/doctrinal proclamations of these councils are infallible and binding even today, not the disciplines or pastoral decisions issued by them.