The reference to "supernatural" is all yours.
Like we were discussing earlier with Sarkus, it all comes down to what one means by "God."
There are concepts of God available to us for consideration which suggest that God is involved in the details of our daily lives, meaning that also any conversation we might have on the topic of God, is still possible only with God's involvement.
If we work with such a concept of God, simply one person sharing something about their belief is not enough to make the listener understand; there has to be some acknowledgement of God's involvement in the whole matter.
It is only from the perspective of strong atheism that God is understood in such a way that it seems appropriate to completely exclude God from any and all conversation on the topic of God, and as such, only two people exchanging words is deemed enough for understanding to come about.