Complex sentence: These can be taken to represent that the two were coregents, as was thought to be the case initially, however, the scene in the tomb of Meryre is not dated and Akhenaten is neither depicted nor mentioned in it.
Split into simpler sentences: These can be taken to represent that the two were coregents, as was thought to be the case initially. However, the scene in the tomb of Meryre is not dated and Akhenaten is neither depicted nor mentioned in it.