Stacked-Bayesian GLS periodogram of the planetary signal at 14.22 d and on the zero-planet residuals (left diagram with its ownnormalization). The three s-BGLS on the right were calculated using the one-planet Keplerian RV residuals and show signals that we attributed to stellar activity: the forest of signals between 60 and 75 d corresponding to roughly half of the rotation period (left), the RV signals around the photometrically derived rotation period at 119.5 d (middle), and the long period signal around 600 d. In all four plots, the dashed black line indicates the boundary between HIRES and CARMENES data, which were taken successively.