Top: RV curve of the 8${}^{\mathrm{d}}.$234 primary measured in reSPEFO on He II 4686 Å line. Bottom: RV curves of the 8${}^{\mathrm{d}}.$234 primary (blue) and secondary (red) based on the reSPEFO RVs of the clean He I 5016 Å line. A preliminary ephemeris T_RVmin. = RJD 60003.740 + 8${}^{\mathrm{d}}.$2347 × E was used in both plots. Errors are taken as a mean of two independent measurements and are too small to be seen.