Results of the three retrievals of the same simulated atmosphere using different combinations of the synthetic spectra of β Pic b: the SIN-FONI MRCCS-only retrieval in orange, the LRSP-only retrieval in blue, and the retrieval using all techniques in green. The off-axis panels show the projected 2D posterior distributions of the main model parameters (readers can refer to the description in Sect. 2.4). The indicated values above each histogram on the diagonal refer to the median and 1-sigma uncertainty for CROCODILE. For the molecular abundances, we omit the logarithm in front of the names of the molecules for the sake of readability. The dashed red line represents the true parameter value, and it is not shown for the abundances given the different chemical treatment between simulated observations and forward model.