Nun and Naunet deities of the water of chaos.

Perhaps Nun/Naunet, who are thought also to be the parents of Ra. Myth does not say.

The children of Ma'at and Thoth were sometimes said to be the Ogdoad: Nu, Naunet, Amun, Amaunet, Kuk, Kauket, Huh and Hauhet.

Hapi was thought to be the husband of the vulture goddess Nekhebet in Lower Egypt, and of the cobra goddess Uatchet (Uatch-Ura, Wadjet) in Upper Egypt. When he took on the attributes of Nun (Nu), Hapi became husband to Nun's wife, the primeval goddess Naunet of the Ogdoad

No. The are not "the same".

The Greek goddess Chaos means invisible air and gloomy mist; the gap, the space between heaven and earth.

Nun/Nu and Naunet were two of the eight Ogdoad (a set of four goddesses and four gods). The name of the water of chaos was Nun.