Close-up view of the metal lines in the X-Shooter (2020) and UVES spectra. The observed spectrum is shown as a solid blue solid line, the individual unweighted synthetic spectra of the primary and the secondary component are represented as black dotted and green dotted lines, respectively and the combined synthetic spectrum as red dashed line. In the combined synthetic spectrum ISM absorption lines, which originate from the Galactic foreground and in the SMC, are included. They are labeled as “(is)”.