Simulated local stellar surface velocity below the planet along the transit chord as a function of the phase (bottom) and stellar radius (top) for a given star–planet orientation (λ = 0°; i_* = 150°; b = 0.2; V = 10), wherein both a solar DR and CLV are injected; compare to Fig. 1 to note the CLV impact (overplotted here in light colours), particularly the relative redshifts near the limbs. The corresponding DR + CLV model fit is shown in blue, and the CLV + SB fit is plotted in orange; a positive BIC indicates a preference for the more complex DR + CLV model.