The spectra in figure show the corresponding 2DES associated with the respective plots in figure . We note that spectra in figure ), b) and c) are exactly those in Humphries et al. , which employs the same model with the IDR parameters. They show a reasonable level of inhomogeneous broadening as a consequence of the subsumed vibrational mode, but vibronic peaks are still clearly distinguishable. All peaks, including the cross-peaks, are broadened individually by the coupling to the bath resulting in more broadening than in the SDR case, but significantly more peak precision than in the ODR regime.