The other culture is a mysterious one. They suddenly appears out of nothing at the most northern place in norway, no moving traces has been found, not from east, south or west. And they have looked pretty hard and ruled this out. The only possible theory is that they survived the iceage inside the ice, isolated, or they came from now sunken island doggerland, a little known And understood culture. Their tools was quite primitive and the same type as the neandertals used 40-60 000 years ago. Not a single bone has been found from this culture, so we do not know what they looked like or what type of humanoid they was. Several of thousands of years later the fosna and komsa culture lived side by side but did not share any technology or trade with each other. This is more than strange. The komsa still used their primitive tools, no development and had semingly no peacefull connection with the fosna culture. Then around 8000 bc the komsa culture suddenly disappears from the human history. Only the fosna lived on. Not a single village or city has been found by this seaculture as they all lie underwater today. Only a few temperary hunting shelters on the highlands has been found, but they know their main villages lied near the coast as they was almost exclusively sea-oriented.
The main god of the stoneage norway was hel. A woman fertility godess. Thousands of places have the word hell in norway. The most common is helvete. Up in north during stoneage it was the woman who ruled. Men had little value and did not gather as much food as the women did. They hunted and was away much of the time, while the women gathered eggs, birds, berries, different seafoods, raised the children and took the important decisions in the village.
When the first skeletons and cities of the komsa culture comes to light in the future we might expect great surprises.
Your sources for the bolded above? This conceptualization would appear to be in conflict with current understandings.