Time-averaged kinetic energy vs. mean suppression factor for our 2D simulations (left panel) and 3D simulations (right panel). The points are color-coded as in Fig. 1. In 2D the time-averages were performed over a window of t = [130, 170] ω_T⁻¹ to reduce contamination by the large-scale g modes. In 3D we show time-averages for the three surviving runs only, while the three decaying runs are shown as solid lines (the full extent of the decay is shown in the inset). In both panels the black solid line represents a relation of linear proportionality. The linear proportionality between conductivity and turbulence levels found in PL22a and PL22b is seen to remain valid in an average sense in simulations including whistler-suppression of thermal conduction.