Yontenjamyang,
Your response to Dondrup is excellent, and an important addition, but ultimate truth and conventional truth are nominally distinct. Though they are the same entity and arise simultaneously, the purpose of my previous explanation and Dondrup's subsequent understanding is the clarification that impermanence is not emptiness of inherent existence. Although we say they are the same entity or that for example form is the emptiness of form appearing as form, emptiness is always only the mere absence of the inherent existence of form, not all the conventions ascribed to form. Dependent-relationship and impermanence prove conventional truths are empty, and they are the same entity as their emptiness because they arise simultaneously, and exist because of each other, but the emptiness of form is only the mere emptiness of form, it is not the qualities of impermanence, color, shape, texture, materials, name, function and so forth.