Yes, Its true, Soul Can travel in the conditions of sleeping or dreaming, Soul can travel anywhere in world and in past years before in 1 seconds of world. soul having limited times for explore diffrent places in diffrent time.
Dreams not containt soul its only signals or you can say this is guide life for feature.
I think so, cause to me dreams feel and seem like more than just mental images….and your brain(mind) along with everything else is shut down, it’s in sleep mode…your body is sleeping, but what about your spirit? Perhaps it doesn’t need to sleep? And perhaps is resides on another realm where anything can happen while our bodies rest. Or something to that effect.