Core (taken from Li et al. 2020b, based on the slope of the g-mode period-spacing pattern), envelope (from the rotational splitting of the g₁ mode) and surface (from spectroscopic line broadening ignoring pulsational velocity broadening) rotational frequencies (f_rot) as a function of the fractional radius (R/R_⋆) of the primary component of KIC 9850387. The core and envelope rotational frequencies are positioned at the maxima of the rotational kernels of the dipole n_g = 39 and n_g = 1 modes represented in Fig. 10. The errors on the core and envelope rotational frequencies are smaller than the symbol size. The dashed black line represents the rotational profile from the core to the surface that is compatible with macroturbulent line broadening due pulsations.