No matter what you think about what the ancestors of the incas would have done to the visiting vikings somewhere maybe not in the inca ancestor homelands, - the fact still remains, - inca bodies buried on a christian spot in Norway.
In a window of time, where the Norse were, hands down, the greatest Seamen and navigators in the world.
In a window of time, where it is absoluely established that Vikings were already in N-America, in Istanbul, deep inside Russia, settling in Greenland, and also exploring the coasts of Africa!
If this finding is waterproof, I put my money on the Incas sailing the high seas in a longboat.