Retrieval results of three chemistry approaches: free-chemistry (solid/purple), quenched via P_quench (dashed/teal), quenched via K_zz (dot-dashed/turquoise), and un-quenched (dotted/orange) equilibrium chemistry. The line styles are kept consistent in all panels and the envelopes and error bars specify the 95% confidence intervals. Left panel: abundance profiles relative to ¹²CO for NH₃, ¹³CO, CH₄, H₂O, and ¹²CO. The free-chemistry abundances are shown as markers with error bars for clarity, but extend vertically over all pressures. Middle panel: retrieved PT profiles and emission contribution functions. Right panels, from top to bottom: posteriors of the C/O-ratio, metallicity, and carbon isotope ratio. The carbon abundance was used as a proxy for the metallicity (i.e. [C/H]) in the free-chemistry results. The un-quenched equilibrium model finds substantially different results and is heavily disfavoured over the free-chemistry model at 29.0σ.