Sample calibrated V² GRAVITY FT data as a function of baseline length for single-epoch observations of two sources. The data pointed are color-coded by baseline. In both cases the sources are partially resolved, e.g., the visibilities fall with baseline length. For NGC 1365 on 2018 January 8, the V² approaches 1 at short baselines. For IRAS 09149-6206 on 2018 November 20, the short baselines remain significantly below V² = 1. The black lines are the best -fitting 1D Gaussian models for each epoch.