  We assess transport properties of heavy quarks in the Quark-Gluon Plasma
(QGP) that show a strong non-perturbative behavior. A T-matrix approach based
on a potential taken from lattice QCD hints at the presence of heavy-quark (HQ)
resonant scattering with an increasing strength as the temperature, $T$,
reaches the critical temperature, $T_c \simeq 170 \; \MeV$ for deconfinement
from above. The implementation of HQ resonance scattering along with a
hadronization via quark coalescence under the conditions of the plasma created
in heavy-ion collisions has been shown to correctly describe both the nuclear
modification factor, $R_{AA}$, and the elliptic flow, $v_2$, of single
electrons at RHIC and have correctly predicted the $R_{AA}$ of D mesons at LHC
energy.
