Transition radius between the SH and the surrounding ICL as a function of halo mass. Our model predictions (red and blue lines) are compared with the results from Proctor et al. (2024) based on the Eagle (cyan and orange symbols) and C-Eagle (green symbols) simulations and extrapolations of observed data by Ragusa et al. (2023) from the VEGAS survey (brown symbols). For comparison, we show with dashed (YS50HR) and solid (YS200) black lines the scale radius-halo mass relation. Our model predictions are in very good agreement with both theoretical and observational measurements across the entire halo mass range investigated, and all data indicate an increasing transition radius with halo mass.