I have kind of a weird, silly problem, coal! My recip and I overlap on two fandoms, both within the same relatively narrow genre, and as such the prompts are really similar for both, including a specific type of AU. I'm definitely on board, because the genre sort of implicitly lends itself to this AU (think, say, requesting a space opera AU of a canon involving space travel - the possibility is built into the premise itself), but the problem is that now I have two solid ideas for the same variety of that AU for both fandoms. I really want to write both, but I feel like it'll be pretty damn obvious that they share an author.

What should I do? Just own it in the author's notes? Try to make them different enough that it's not quite so blatantly announcing they're both written by me? Just act as if it's not an issue and if they figure it out, they figure it out? (Am I overthinking this??)