S/N maps of TiO from the ESPaDOnS observations. Panel a represents the S/N map of all spectra; panel b: S/N map of the pre-eclipse TiO signature. The expected orbital parameters are indicated by the yellow dashed lines. A weak TiO signal is located close to the orbital parameters found with CARMENES, which is indicated with a red star (). Only the spectra before eclipse contribute to the signal. The x-axis is presented in the systemic rest frame (v_sys) in order to be consistent with Herman et al. (2020).