Rossiter-McLaughlin effect observed during two transits of HD 332231 b. Panel a: HARPS-N observations from Knudstrup & Albrecht (2022), showing the in-transit RV anomaly consistent with a well-aligned orbit. Blue points denote the measured RVs with 1 σ uncertainties. The solid red line shows the best-fitting model, while the orange-shaded curves represent 20 posterior samples illustrating the range of plausible solutions. The dashed gray line indicates the higher-amplitude RM model based on the CARMENES data. Panel b: CARMENES observations from Sedaghati et al. (2022), shown as green points with the corresponding best-fitting model. The dashed gray line shows the HARPS-N-based solution for comparison. Panel c: Same CARMENES data, re-fitted with an added linear RV trend (dashed gray line), yielding a reduced RM amplitude. Panel d: OOT CARMENES measurements taken the night after the transit, showing a non-zero RV slope, also indicated with a dashed gray line. The RV changes induced by the orbital motion of HD 332231 b are shown in red and remain negligible in this scale.