Same as Fig. A.1 for GLS 8673 and for the He I λ 5875 line. For this system, the orbital phase of each spectrum—matching the same color—is displayed on the right side with respect to the two periods derived from photometry. We note a marginal feature between the spectral lines of the short-period binary system, in two spectra (cyan and pink) which were taken during quadratures of the short-P eclipsing and coincident with the conjunction of the 35.2-d one. But, they should be confirmed with more data.