Data combined in our analysis from different viewing angles. Left: B_LOS derived at disc centre from SO/PHI-HRT observations, normalised by the local μ at which it was observed and reprojected to the limb. Right: Intensity contrast is computed from SDO/HMI I_c data at the limb. Contours: We identified facular pixels at disc centre in SO/PHI-HRT observations and then re-projected this map to the limb. The same sub-region as in Fig. 4 is shown.