Post-MS evolution of the magnetic 15 M_⊙ models with v_ini/v_crit = 0.3, 0.4. The models with the dashed blue outlines have been computed with Spruit (2002)’s prescription, while the models with the thick black outline have been computed with the calibrated prescription of Eggenberger et al. (2022). We note that the colouring scheme applies to both the models and the datapoints (i.e., the observed stars have log g ≈ 3).