According to the Bible at least a couple of humans have been resurrected to life from death and apart from the fact that the Bible says the wages of sin is death then these resurrected ones would be deemed sinless therefore they should not have died again, however apparently they did.
In any case none of these resurrected ones ever had anything to say about their experience or non experiences while in the death state.
Here I might take exception to what Jesus said, words to the effect that when your dead is if you are asleep and know nothing , well I don`t know about Jesus when he`s asleep ,but when I`m asleep I have another life.
I dream, sometimes they are amazing and can be quite bazaar but I am alive and doing things and inter-acting with other people in my dreams { wet dreams can be most pleasant }
So to answer the OP I guess I`ll know or won`t know when I kick the bucket.