Two totally different things. Adverse possession is an actual taking, and has no chance in a court. Think of prescriptive like this: You own a tract of land, and have a home and the back end of it. You access that home by means of a gravel road from the main road, and have ever since you took ownership of the land. You decide you would like to subdivide. The local governing authority would most likely insist that you declare that gravel road an easement, whether your subdiv plan has it or does away with that road in some fashion. This is considered a prescriptive easement.
First things first. Congress needs to get together and fire the director.
Go from there.
Thanks, BRTF.
That easement would run with the land from then on.