Intrinsic CCF per night (left panels) and their respective residuals (right panels). The RM signature is well visible during the transit as a bright track. The dashed horizontal lines correspond to T14 contact points (orange) and T23 (green). The solid red lines (with black outlines) correspond to spectra that were excluded from the analysis. The dotted black lines correspond to the expected local stellar velocity using the best-fit model. The first night’s residuals show a systematic trend, likely due to line asymmetry.