Zoomed-in view of the 2D spectra obtained with VLT/X-Shooter for those galaxies that are spectroscopically identified as members of any of the two galaxy systems set at (systemic redshift) z ≃ 2.03 (top panel) and z ≃ 1.68 (bottom panel). The spectra are shifted accordingly to show the velocity offset with respect to the systemic recession velocity in correspondence of the H_αλ6564 emission line, indicated by a blue ellipse. For A1 and D1, the contiguous [NII]λ6584 emission line can also (hardly) be seen. For C1a the H_α emission line is broad and blended with some contribution from the [NII]λ6550 and λ6584 lines, for a total width of more than 200 Å. For display purposes, known sky lines have been masked with a width of 0.2 nm and the colour range has been adapted for each source to maximise clarity. However, we have consistently identified the spectral features in non-masked versions of the spectra.