  In a recently published work we provide a proof-of-concept of a novel method
to extract the heavy quark momentum diffusion coefficient from color-electric
correlators on the lattice using gradient flow. The transport coefficient can
be found in the infrared limit of the corresponding spectral function which is
reconstructed through perturbative model fits of the correlator data. In this
proceedings report we want to give more detailed insights into the systematic
uncertainties of this procedure and compare our results with other studies.
