Mass of each component versus instantaneous dimensionless spin during the evolution of an equal-mass binary undergoing CHE. Shown are the original simulation from dB20 using the TS dynamo (normal TS), one recomputed using the modified version of the TS dynamo from Fuller et al. (2019, TSF), and one where solid-body rotation is enforced. These simulations were computed with the same setup and MESA version (11701) used by dB20.