If approved and properly trained theologians racked their brains over the technicalities of these issues, who are we to proclaim de fide anything other than what the Church has defined. Namely, that there is no salvation outside the Church and that non-members of that Church can be saved. Anything else is a trap of the Devil to get us to fight each other instead of uniting to convert the world so we do not have to worry if they are members of that Church, inside that Church, joined to that Church, part of the soul of the Church, etc. or not.