When they do, we remind the subconscious to translate the language of the past into the language of the present. This is probably due to conscious interference. The SAME information comes forward in light, medium, or deep hypnosis. The deeper levels tend to cause people to trust more of what they said. Relaxing and knowing the level is not important to achieving the information will naturally move people into deeper levels of hypnosis.
People are as consciously aware in hypnosis as their conscious mind wants to be.
Most people are curious about a past life regression and thus remain conscious no matter what level of hypnosis they reach. To trust the process means to know that the subconscious mind is always aware in hypnosis and will alert the conscious mind should anything be said or done which it knows would be alarming to the conscious mind. In fact, hypnosis can be said to be a super aware state of mind. In the beginning, you will be more alert and aware in hypnosis, even to hearing a pin drop in the next room. However, since the subconscious is more open to suggestion in hypnosis, normal and safe sounds will not be disturbing, unless you or the hypnotist tells the subconscious they are disturbing.