If the Bible says that the unsaved dead will be weeping and gnashing their teeth, that definitely means they are conscious.
There will be weeping and gnashing of teeth when you see Abraham, Isaac, Jacob, and all
the prophets in the kingdom of God, but you yourselves are thrown out. People will come
from east and west and north and south, and will recline at the table in the kingdom of God.
Is this not the marriage supper of the Lamb?