I wonder if the use of it in curry dishes facilitates bioavailability - as with curried veggies in coconut milk. (Due to the coconut milk/oils/food nutrients)
Coconut oil being a surfactant would very likely increase absorption. Although we have to keep in mind that sometimes certain things are poorly absorbed or not absorbed for a good reason. For example saponins that are not absorbed from the intestines. In the intestines they serve a number of beneficial purposes. If they got in to the blood stream though they would destroy our red blood cells. So nature is protecting us by blocking their absorption. This is one of the problems with companies always trying to make compounds more absorbable.