  We revisit the study of the violation of the Leggett-Garg inequality in
neutrino oscillation data as a mean to test some of the fundamental aspects of
quantum mechanics. In particular, we consider the results by the Daya Bay and
RENO reactor experiments, and the MINOS and NOvA accelerator experiments. We
find that DB and MINOS exhibit a strong manifestation of Leggett-Garg
violation, while for RENO and NOvA data the indication is weaker. Considering
the particular baselines and energy ranges explored by each experiment, our
results demonstrate that the Leggett-Garg violation is more evident for smaller
baseline-to-energy ratio in all the data sets considered, a relevant aspect to
be considered when searching for evidences of quantum mechanical decoherence on
neutrino oscillations.
