2652 20160701171708.0 ASTROimport-809 Frémat, Y. 2006 Spectral separation of two pulsating non-single stars. theta 2 Tau and RS Cha are 2 binary systems also showing delta Scuti-type pulsations. theta 2 Tau is a Hyades "single-lined" spectroscopic binary with an orbital period of 140.7 days. Its secondary component, though of similar temperature, is less evolved and fainter than the primary and is therefore difficult to detect spectroscopically. RS Cha is a double-lined pre-main-sequence eclipsing spectroscopic binary orbiting with a short 1.7 days period. Since both systems address several interesting issues related to stellar evolution, metallicism, binarity and pulsation, we explore in the present contribution the possibility to study their spectra using the Fourier disentangling technique developed by \citet{1995A} for extraction of reliable and accurate component properties. Lampens, P. Alecian, E. Balona, L. Catala, C. Goupil, M.-J. Torres, G. Škoda, P. Memorie della Societa Astronomica Italiana 77 2006 521 http://esoads.eso.org/abs/2006MmSAI..77..521F published in NONREF