So James, the leader of the Jerusalem Council, the FIRST center for Christendom before Antioch, possessed infallibility when he uttered his final pronouncement after all of those present finished conferring?
Interesting...
Maybe you are reasoning a little over-precisely?
The COUNCIL itself claimed protection from error in the language, “It seems good to the Holy Spirit and to us.”
If one understands “infallibility” as “protection from error” maybe it is a tad less outrageous seeming. The individuals involved, including Peter himself, frequently err. But, we hold, under certain circumstances that WE, the Church as a whole, protected from their teaching erroneous things.
Note, please: I’m not trying to argue FOR the idea as much as I’m trying to clarify what it is.
One might also find peripheral support in Paul’s writings about the office and gift of “teaching.”
not necessarily so...infallibility belongs to the Pope and only in matters of faith and morals....very limited indeed.