Yes.It is a reference to a hypothetical case. It is said in faith.It is speculation. Since it cannot be a concrete case it cannot be a practical exception to the dogma extra ecclesiam nulla salus._________________________________
Hypothetically. Speculatively.So it is not relevant or an exception to the dogma extra ecclesiam nulla salus. This would be looking at this passage with the theology of Feeneyism, without the irrational premise. I do not assume invisible and imaginary cases are visible in the present times.