Windt’s commentary goes far beyond mere commentary in offering new arguments against the default neuroscience view that consciousness is that which disappears in dreamless sleep, by providing a refined conceptual proposal about the phenomenal structure of dreamless sleep experience, and by presenting a new taxonomy of dreamless sleep states and experiences. Thanks to her commentary, sleep science and the neuroscience of consciousness have new conceptual and methodological tools for refining the investigation of consciousness during sleep (see also Windt 2015a).