We first studied the 2×ZARC model, which consists of two ZARCs (Section 3.1.1) in series. These circuits were chosen to exhibit overlapping, separated, or distant timescales (see the circuit parameters in Tables and). Six synthetic EIS spectra were generated with 𝑅 ct,2 (𝜓) and show the corresponding qGP DRTs and 2D contour plots of (c) median and (d) standard deviation.