Is a consciousness without a subject possible, a radically unowned consciousness? If you imagine discrete disconnected instants of an awareness this does not fit the bill since each the instantaneous nature of the awareness does not preclude in any way it having a subject, it fails to address the question, and the discontinuous nature of the succession of such moments entails a space in which this diversity is registered as such, which then is effectively the underlying consciousness, the moments now simply variants within it. You might instead coming at it from the outside, imagine a compresence of some variety of existents which achieves a transparent self-representation, that is which becomes a situation, achieves internal differentiation and wholeness, but does so in a way that each distinguished part has an equal claim on being the centre, or subject. In this case the subject-object distinction is done away with before it can arise. This might be conceivable and were it realised would lead to a very different topology of world than that which we have assumed.