  In a couple of recent publications ( arXiv:1706.08437 and arXiv:1712.01593 ),
the authors attempted to achieve simultaneous explanation of the persistent
flavor anomalies in $b\to s$ and $b\to c$ semileptonic decays with a minimal
scheme by using only three unknown new parameters. The analysis was obtained
with a handful of precise observables. Motivated by their proposal, in this
paper we reanalyze the models proposed in the aforementioned papers with a
total of 170 observables from those channels including newly available
measurements, correlated theoretical results, and constraints. We validate our
results by searching for the most influential points and outliers. By analyzing
the parameter spaces and their relationship with the constraints, we gain new
insight and statistical significance in those models. We also provide a new and
precise calculation of $R(J/\Psi)$, obtained during the analysis.
