Your image from Dendera clearly shows the wall relief. But R. Fusinak, a very good friend of David Rohl who almost got a PhD, claims that the "bulb" is a "sarcophagus lid" - not that the wall relief is a sarcophagus lid. No evidence of this claim has yet been posted.
As you allege that R. Fusinak pilfered an image from your website without permission and presented it to the board "flipped 180 degrees," you should have a good idea as to what the "bulb" is.
Do you consider that the bulbous objects which are depicted on the wall relief, are sarcophagus lids? If not, what would be your thoughts on just what they are?