Wigner's friend and the quasi-ideal clock

In 1962, Eugene P. Wigner [in Philosophical Reflections and Syntheses (Springer, Berlin, 1995), p. 247] introduced a thought experiment that highlighted the incompatibility in quantum theory between unitary evolution wave function reduction measurement. This work resulted class of experiments often called Wigner's friend scenarios, which have been providing insights over many frameworks interpretations theory. Recently, no-go theorem obtained by D. Frauchiger R. Renner [Nat. Commun. 9, 3711 (2018)] brought attention back to its potential putting theories test. Many answers this result pointed out how timing could be yielding paradox. work, we ask what would happen if isolated scenario did not share time reference frame with outer observer, were tracked clock. For purpose, recollect concepts provided frames resource asymmetry, learn internalize scenario, introduce model for feasible clock proposed M. Woods, Silva, J. Oppenheim [Ann. Henri Poincar\'e 20, 125 (2019)] quasi-ideal Our results shown approach produces no decoherent behavior, disagreement superobserver persists even an imprecise on side. However, Gaussian spread can control observables do raise paradox, indicating relevance deepening analysis.