Projected sky-plane separation of HD 98800 AaAb relative to the HD 98800 BaBb disc as a function of time, compared with the disc geometry adopted in Faruqi et al. (2025). The model is used to identify the onset of the occultation of HD 98800 AaAb by the circumbinary disc around HD 98800 BaBb. The shaded region marks the predicted occultation windows for the dust and gas edges, and the vertical line indicates the median ingress and egress epochs.