They didn’t test a hypothesis, they created one out if thin air.

Aside from being a speck of solid land in the general area (necessary for any of the radio calls…none of which have been proved to come from the aircraft..to be real), I don’t believe there was anything to suggest that AE headed there, let alone made it to the island.

And rarely mentioned is the fact the US Navy over flew the island within a week and saw nothing.

Feel free to correct me.