Bright galaxy interlopers inside the isolation ring, (Θ_G,3Θ_G], for different random observers. Left panel: Schematic representation of galaxy members and bright interlopers detected by a random observer within the isolation ring. Right panel: Distribution among the 7488 CGs of the percentages of random observers (RO) who detected interlopers. Inset legends quote the percentages of observer-dependent (OD) CGs due to the detection of bright interlopers in this case. Vertical green lines represent the medians (solid) and the 25th and 75th percentiles (dashed) of the distribution for the observer-dependent CGs (grey histograms). The teal bar between 0 and 5% represents the fraction of CGs considered robust. We also display the distributions for CGs classified originally as Reals (blue) and CA+Fake (red) and quote the percentages of these classes of systems with respect to the sample of observer-dependent CGs.