Radius of the Kepler TTV characterised planets the full sample that came either from Hadden & Lithwick (2017) or Leleu et al. (2023), as function of the S/N of individual transits (S/N_i). The vertical grey dashed line shows the S/N_i = 3.5 threshold above which we consider that large TTVs do not prevent the detection of the planet (Leleu et al. 2023). The horizontal grey dashed line represent the radius cut-off above which we consider that the published mass-radius population is not affected by selection biases.