WFC/INT r-band image of the PSZ2 G120.76+44.14, which shows the presence of two optical counterparts at different redshifts located at almost the same distance from the official Planck PSZ2 position (∼2′). The white contours correspond to the 3 and 6 × 10⁻⁶ levels of the Compton y-map in this area, and enclose both observed sources. The small red circle indicates the position of the Planck PSZ2 source. The small RGB images show the zoomed regions around the two clusters, one at z_spec = 0.296 (top panel), and a second cluster at z_spec = 0.393 (bottom panel). We also detected a gravitational arc around the BCG of the second cluster.