Comparison between the results of the LoTSS DR2 and from Cuciti et al. (2021b). Left: The 3R_e − M₅₀₀ relation (without the low-brightness points identified in this world). Right: Comparison of the estimated R_e at low and high frequencies for the common objects. Points marked with a black ‘X’ are the ones for which GMRT data, instead of VLA, have been used. For the case of A773, only the red mark is visible as the two measures overlap.