Normalised spectra of IRAS 17163 (GRAVITY and X-shooter) around the 2 μm continuum level. The presented wavelength range contains all the observed Brγ, Na I, and Mg II emission lines. The dotted line represents the normalised telluric absorption spectrum applied to correct the spectrum of the object. The observed difference in line-to-continuum ratio is due to the higher spectral resolution of the X-shooter.