Could simply be a piece of debris floating in the mix around the twister. It's really hard to get any sense of direction and distance from that video
as there is very little to relate it to. In other words, I'd be looking for a more terrestrial explanation.
Many of the results on that search (but not all) are regarding the very same Rods. You should get plenty of info you seek starting there. I know
because this one Mysterious Skyfish? is a thread I made long ago.
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