Continuity Without Self: Viññāṇa vs Ālayavijñāna in Comparative Perspective

In the early strata of the Pāli Canon,in discussions of dependent origination in the Mahātaṇhāsaṅkhaya Sutta and the Mahānidāna Sutta, consciousness or viññāṇa is repeatedly characterized as dependently arisen (paṭiccasamuppanna), specific to its object (e.g., cakkhuviññāṇa, sotaviññāṇa), and lacking any underlying unity apart from causal continuity. In contrast, Yogācāra sources such as the Saṃdhinirmocana Sūtra and systematic expositions in the Yogācārabhūmi-Śāstra systematize a layered model of consciousness introducing the concept of ālayavijñāna as a subliminal, foundational consciousness that serves as the repository of karmic seeds (bīja) and the basis for the arising of the six manifest cognitive consciousnesses. Though described as momentary and dependently arisen, it appears to function as a unifying and enduring āśraya (support) for saṃsāric continuity. The question, which then arises is that Do the Nikāyan materials when interpreted without later Theravāda Abhidhamma categories contain any conceptual space for a structurally analogous substrate, or is Yogācāra’s ālayavijñāna a divergent theoretical innovation? Further Does the mutual conditioning of viññāṇa and nāma-rūpa in DN 15 imply a recursive continuity that could support a proto-ālaya interpretation, or is this reading anachronistic?