Upper panel: Same as Figure 3, but for a binary with a 20 M_⊙ BH companion. The solid (dashed) lines denote models with (without) the TS dynamo. The lines in different colors correspond to the various He stars initial rotation rates (blue: ω_i = 0; orange: initially synchronized with the orbit; green: ω_i = 0.3 ω_crit; red: ω_i = 0.6 ω_crit; purple: ω_i = 0.9 ω_crit). Lower panel: Total internal angular momentum as a function of mass coordinate within the corresponding models at carbon depletion.