feature in the proton and helium CR fluxes [@AguilarEtAl2015], i.e. $\sim 300$ GV. Actually, recent years have been characterized by the observational establishment of “spectral anomalies” (for reviews, see [@Serpico2015; @Serpico2018]), in particular of spectral breaks in primary species [@PanovEtAl2009; @AhnEtAl2010; @AdrianiEtAl2011a; @AguilarEtAl2015; @AguilarEtAl2015a; @AguilarEtAl2017]. In turn, there has been growing evidence in favor of their interpretation in terms of a high-rigidity break in the diffusion coefficient [@GenoliniEtAl2017; @ReinertEtAl2018; @XueEtAl2019], notably after the first AMS-02 publications of nuclear CR fluxes [@AguilarEtAl2017; @AguilarEtAl2018]. In this article, we move several steps beyond our previous analysis [@GenoliniEtAl2017], presenting a [*complete*]{} analysis aiming at constraining CR propagation and at proposing new benchmark setups: First, we rely on an improved analysis of the B/C data by the AMS-02 collaboration [@AguilarEtAl2018]. We further benefit from additional data on the primary species to constrain the break independently from the B/C ratio—using the C and O fluxes [@AguilarEtAl2017] which are most contributing species to B production [@GenoliniEtAl2018], but were not available to Ref. [@GenoliniEtAl2017]. Second, we follow the new methodology proposed in [@DeromeEtAl2019] to analyze the AMS-02 data, carefully accounting for a number of subtle (but highly important) effects which are usually ignored, notably the (partial) correlations in 