Based on the image analysis, the overlapping of the figures of Justinian and the bishop in the mosaic at San Vitale is meant as a reference to "<u>the tension between the authority of the Emperor and the church."</u>
By looking at the picture directly, Justinian can be seen as the nearest person to the viewer; however, when the positioning is considered, Bishop Maximianus's feet show that he is closer to the viewer.
This ambiguity brings the question of who is in front, which is expected to suggest the most powerful. However, since there is some vagueness on who is in front of the picture, the overlapping refers to the power tussle between the leading figures.
Hence, in this case, it is concluded that the overlapping refers to the tension between Justinian and the bishop.
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