Ajata, the Para-Marti-Kasat-Tia, and the Bivahari-Sat-Tia

In Advaita, they talk about three levels of reality. According to Bhava-van, there's no distinction between waking and dream. Our aim in a waiter is to separate ourselves from the identification with this body. For example, if I'm an adveting, then I shouldn't go to a doctor, supposing I believe that, that is a misunderstanding at the waiter. Only when we're aware of duality do we seem to be doing actions?