This paper examines the structural relationship between Coherent Observational Epistemology (COE) and the Theory of Global Time (TGT) and clarifies how these two frameworks address different layers of scientific reasoning. COE provides a methodological framework for integrating heterogeneous observational sequences produced by independent observational localities. It establishes structural conditions under which distributed observations may support coherent scientific inference, focusing on ordering compatibility, transformation traceability, and semantic commensurability across observational environments. TGT, by contrast, develops a physical account of temporal structure in which time arises from the canonical ordering of observer-registered reception events rather than from a pre-existing temporal coordinate or spacetime metric. Within this framework, temporal history is represented as an ordered chain of events reconstructed from observational data, and once reconstructed, this canonical order cannot be retroactively modified. At first glance these approaches appear to impose conflicting constraints: COE allows retrospective reconstruction and alignment of observational sequences, while TGT asserts the immutability of reconstructed temporal history. The paper demonstrates that this apparent tension arises from a conflation of epistemic and ontological levels. COE operates at the epistemic level of observational integration, addressing how observational records from distributed infrastructures can be aligned and interpreted jointly. TGT governs the ontological structure of reconstructed temporal history, specifying constraints on the canonical order of events that emerge from observation. Once this distinction is made explicit, the two frameworks become complementary rather than conflicting. On this basis the paper introduces the Temporal Reconstruction Constraint, a structural principle stating that observational reconstruction procedures may refine or extend the set of accessible events but must preserve the canonical order of any previously reconstructed temporal history. The resulting framework yields a layered architecture of scientific inference: • observational localities produce ordered sequences of recorded events;• COE provides structural conditions for cross-local alignment of these sequences;• TGT governs the ontological structure of temporal history reconstructed from reception events. This layered perspective clarifies the relation between observational practice, epistemic reconstruction, and temporal ontology in distributed observational systems such as astronomical networks, sensor arrays, and large-scale measurement infrastructures.