I suspect the answer is "Not yet, but this is on the roadmap", but is there a way to embed a flow into another flow?

Not yet, but this is on the roadmap 😉

Hah!

@lemon-football-52952 what do you want to do with embedding one flow into another?

Well, I think I want to take the "Promote Biometrics" flow and embed it into my modified "sign up or in" flow, making the latter, well, promote biometrics if they aren't signed up. I am happy to admit I'm missing something.