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The two distinct correlation functions are derived from a single experiment. Because the relaxation time changes only 2% during structural recovery, no aging model is needed to analyze the results. Although being conceptually different processes, dielectric relaxation and recovery dynamics are observed to be identical for propylene glycol, whereas single-particle dynamics as seen by photon correlation spectroscopy are significantly faster. This confirms the notion that structural recovery and aging are governed by all modes observed by dielectric spectroscopy, i.e., including cross correlations, not only by single-particle dynamics. A comparison with analogous results for other materials suggests that the relation between relaxation and recovery time scales may be material specific rather than universal.<\/jats:p>","DOI":"10.1063\/5.0131342","type":"journal-article","created":{"date-parts":[[2022,11,21]],"date-time":"2022-11-21T15:07:02Z","timestamp":1669043222000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":12,"title":["One experiment makes a direct comparison of structural recovery with equilibrium relaxation"],"prefix":"10.1063","volume":"157","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8503-3175","authenticated-orcid":false,"given":"Ranko","family":"Richert","sequence":"first","affiliation":[{"name":"School of Molecular Sciences, Arizona State University , Tempe, Arizona 85287, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"317","published-online":{"date-parts":[[2022,12,8]]},"reference":[{"key":"2023120801091902900_c1","doi-asserted-by":"publisher","first-page":"3113","DOI":"10.1063\/1.1286035","article-title":"Relaxation in glassforming liquids and amorphous solids","volume":"88","year":"2005","journal-title":"J. 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