Percentages of CGs meeting a given CG selection criterion at z = 0, split by CG identification epoch. The sample of z = 0.06 is shown in dark red, the one of z = 0.14 in magenta, and that of z = 0.23 in green. The criteria analysed are compactness, isolation, richness, and all three simultaneously. While 68% of CGs_z > 0 remain isolated by z = 0, only 33% are still conformed by at least four similar-mass galaxies. A small fraction of CGs remain as such at z = 0, with lower values shown by older samples.