Comparison of the recovered values for the non-thermal pressure fraction, ${\alpha }_{\mathit{NT}}(\frac{r_{200}}{2})$, and elongation, e, obtained by fitting 4×2 sets of profiles drawn from the posterior predictive distributions of our multiprobe analysis of A1689. The top panel presents results from profiles generated using model 4-b, which implements the polytropic parameterization. These profiles were fit using both the polytropic (circles) and Angelinelli (squares) parameterizations in two analysis setups: joint X-ray and WL (blue) and joint X-ray, SZ, and WL (orange). The bottom panel shows the same procedure applied to profiles drawn from model 4-c, which follows the Angelinelli parameterization. The grey dashed lines and shaded regions indicate the median and 16th–84th percentile range of the posterior distributions for ${\alpha }_{\mathit{NT}}(\frac{r_{200}}{2})$ and e in models 4-b (top) and 4-c (bottom). These serve as reference values, representing the expected constraints from the full multiprobe analysis, against which the recovered values from the fits can be compared.