The accepted answer to this question:
the best thing to do in this scenario is to flag the question for Moderator attention and mark it as "other". Then add a comment in your flag as to where you think it should be migrated to.
but then, later, it says:
Moderators should only need to intervene in exceptional circumstances.
Migration is not an exceptional circumstance, even if it's not in the "top 5 paths". And please don't say "Oh, but a question can be reposted on the other site" - because with that being the case, it is all the better for the question to be migrated instead.
- This question follows this question of mine.
- I'd also say that having reviewers do repeat typing is also not "the best thing to do".