Generalized Lomb-Scargle periodograms of the spectroscopic data for TOI-733. From top to bottom, the top three panels correspond to the DRS RVs, to the RV residuals after fitting a sinusoid at the detected orbital period for TOI-733.01 (marked as solid vertical teal line), and to residuals after fitting the final multi-GP model presented in Sect. 4. The following panels show periodograms of spectral activity indicators, ending with the window function at the bottom, as annotated in each panel. The solid purple lines represent the frequency of the GP signal, which is particularly visible in the FWHM and dLW, while its first two harmonics in semi-transparent purple are well pronounced in the RVs. A peak at the first harmonic is also visible in panel i). The horizontal blue line shows the 0.1% FAP level.