Top panel: a composite of single BAO features found in the 256 simulations we explore, restricting to simulations with positive BAO detections B _r,s > 0, where we have scaled the radius of the BAO shell by the parameter α to align them for clarity. The red line shows the BAO model averaged over each of the fits to the individual detections. The dashed vertical line is the expected BAO radius given the input cosmology of the simulation. Middle panel: a histogram of the recovered α values from fitting these single BAO features with the model from Section 2.1.1, where the solid line is a Gaussian fit to the distribution with the mean given by the dotted line. Bottom panel: a histogram of the standard deviation in best-fit α measured from features within each single mock (i.e., we measure 256 values of the standard deviation from our 256 mocks). The black shaded region shows our baseline error on α from Ho’oleilana, while the dashed line is the standard deviation measured from across all features and mocks (i.e., all the measurements shown in the middle panel).