I see. Thanks.
Two things, though:
This is a long time after both of them. The Yerushalmi’s story is about a grandson of ??? ????? ?? ???. At this point, the religion with all its legends kicked off. They are the ones who conflated the two. The Yerushalmi is merely (mis)quoting the name that was used.
The other thing is that we aren’t given the name of ?? ????. It may well have also been ???, which helped in weaving the big story.