A subset of retrieval posteriors from simulated Atmos exo-Titan, the TRAPPIST-1 h data for a Titan-like atmosphere obtained using the POSEIDON model. The agnostic bulk gas assumption afforded by the CLR prior formalism leads to the incorrect assessment that CH₄ is the bulk gas. However, the true N₂-dominated Titan atmosphere (black lines and points) does exist within posterior volume along a stark CH₄-N₂ degeneracy that is mediated by temperature.