Ok, instead of a bee think about an ant and an Airplane. An ant will never be able to even aknowledge the existance of an airplane, even if its flying inside one. Its the same idea.

If it was some “easily explainable phenomenon” they would have ALREADY found out what it was mate. They said they went out of natural hypothesis to explain it based on the natural phenomenons we already know about.
So even if its not related to aliens at all, it will certainly not be an “easily explanable phenomenom”.