Just my personal opinion...
the indentations in the cloak don't look like nebuly lines. I believe the pattern is meant to mimic or evoke the shapes of snakes and snakeheads (a very popular visual motif at the time in both Egyptian and Greco-Roman art), as they do in other parts of the garment and the garment accessories.
I've looked at countless images with nebuly and what distinguishes most nebuly lines is that the inner part and outer part are usually curved (or curved with a scalloped margin) and mostly symmetric in terms of the ins and outs. The snake-shaped cloak edges don't follow that basic "formula", nor do the bedsheet folds. The other examples do.
the indentations in the cloak don't look like nebuly lines. I believe the pattern is meant to mimic or evoke the shapes of snakes and snakeheads (a very popular visual motif at the time in both Egyptian and Greco-Roman art), as they do in other parts of the garment and the garment accessories.
I've looked at countless images with nebuly and what distinguishes most nebuly lines is that the inner part and outer part are usually curved (or curved with a scalloped margin) and mostly symmetric in terms of the ins and outs. The snake-shaped cloak edges don't follow that basic "formula", nor do the bedsheet folds. The other examples do.