Gensis 41:18 & 22 - Paraoh's Two Dreams

My Bible references Genesis 41:18 to verse 3, and Genesis 41:22 to verse 6.

I believe the connection lies somewhere in between the subtle differences noted in Pharaoh's reiteration of his dreams to Joseph; however, I am struggling in making the connection.

Commentators suggest that some of the changes noted in Pharaoh's reiteration are due to the fact that Pharaoh did not grasp the implications of the symbolism. While other commentators suggest that Pharaoh purposely disguised these essential points, to test Joseph's ability to interpret.