I've been reading, from various sources, fairly vague and hand-wavey claims that Zoroastrianism and early Judaism influenced each other (and that both were influenced by Atenism).
Looking at summaries of the content of these religions, such a claim seems prima facie plausible, but then I looked at a map.
Zarathustra himself is placed in space and time as, roughly, eastern Iran, perhaps in the 10th century BCE or a couple of hundred years later. This is about 3,000 km from Jerusalem, it would take weeks of dedicated walking to cross that, and the terrain is (and presumably was then) inhospitable. This does not seem prima facie plausible to me -- although it does not seem unreasonable to have, say, trading routes along there, but the integration of two religions seems like it should require an intimate sharing of culture and politics over a long period of time. The geography seems prohibitive.
So, is it actually plausible that early Judaism and Zoroastrianism were sharing ideas? If so, what was the mechanism for that influence? How would the people have come together?