Schematic of the complete MONTEPYTHON 2COSMOS pipeline developed for the purposes of this work. Two instances of the cosmological code, cosmology 1 and cosmology 2, independently sample the cosmological parameters for the two theory regimes, geometry and growth, respectively. These parameters are then passed to the likelihood modules to calculate the theoretical prediction for each individual probe. Finally, the respective independent likelihood values for each probe are multiplied to obtain the likelihood value of the combined data set.