Cross-correlation results of both nights combined for TiO and VO, obtained assuming different atmospheric models (HELIOS+turbospectrum and PetitRADTRANS). Top panel: cross-correlation maps of the TiO (first and second columns) and VO (third and fourth columns). Bottom panel: average of the in-transit cross-correlation values in the planet rest frame between the first and fourth contacts. The vertical axis is shown in S/N units for a better visualisation of the features strength, computed as described in Sect. 4.2. Positive S/N means correlation (see CCF values in the colour bar).