Comparison between the metallicities of the wide binary components of our wide binary sample, as extracted from GDR3 (blue, [Fe/H]) and TIC (red, [M/H]). The highlighted region indicates the nominal metallicity range covered by the open cluster sample assembled in Table 1. The gray box in panel c indicates the range plotted in panels a and b. Panels a and b display Pearson’s r correlation coefficient (Galton 1877; Pearson 1895) between the primary and secondary’s metallicities. Panel d compares the [Fe/H] and [M/H] measurements for all our sample stars where both are available.