Ratio of $\Delta_{\rm recoil}(p_{\rm T,\text{ch jet}})$ distributions with different $R$ for Pb$-$Pb collisions at $\sqrtsNN=5.02$ TeV from the data in Fig. 13, together with the ratios for pp collisions from Fig. 17, for $R=0.2/R=0.4$ (upper), $R=0.2/R=0.5$ (middle), and $R=0.4/R=0.5$ (lower). The uncertainty in the ratio takes into account the correlation of uncertainties between numerator and denominator. JETSCAPE calculations for pp and Pb$-$Pb collisions are also shown.