Kant never believed what you say and his philosophy has nothing to do with phenomena. Kant's philosophy is a priori rational and what he calls synthetic. Phenomenology is entirely empirical philosophy, yes I would agree to what you say about the senses and how they perceive the object but phenomena is more on the experience of the mind by the senses. Noumenal means the world in which we do not fully understand such concepts as God, immortality, freedom maybe love etc.but are drawn nearer to an understanding by morality. Phenomena has nothing to do with noumena which is the 'thing in itself' because it is not fully understood. Why would there need to be a communique, you just look at the object for the sense experience? Then you say something very interesting. But phenomena would for me come after the sensing your mind would experience the object, that experience of the mind would be phenomena, before you identify the object and also on identifying the object.  Memory along with mind is there all along. I like your interpretation of memory. But knowledge is not 'thing in itself'. 'Thing in itself' are noumena.