 Quantum theory can describe scenarios with an indefinite causal order, but whether such processes could be witnessed in real scenarios by violating causal inequalities is still subject to debate. Here, the authors give an affirmative answer, showing that non-causal processes admit a description using the framework of time-delocalized subsystems. This article was authored by Julian Wex, Cyril Branciard, and Ognion Oreshkov.