How does grunewald not create depth in the annunciation from the isenheim altarpiece?

In the Annunciation panel of the Isenheim Altarpiece, Matthias Grünewald creates a sense of flatness rather than depth by using stark contrasts between figures and their surroundings. The figures are depicted with exaggerated proportions and a pronounced lack of perspective, which diminishes the illusion of three-dimensional space. Additionally, the dramatic use of color and light draws attention to the figures themselves rather than creating a spatial environment, resulting in a more intimate and emotionally charged scene. This technique enhances the spiritual and mystical quality of the moment rather than focusing on realistic depth.