Left panel: fraction of correctly recovered companions as a function of the relative flux of the injected companion from injection and recovery tests with simulated GRAVITY data (cf. Sect. 3.2), assuming uncorrelated data (blue points) and correlated data (orange points) for the model fitting. The blue and the orange curves are logistic growth functions fitted to the data points. Right panel: same, but from injection and recovery tests with real GRAVITY data (cf. Sect. 3.3).