Next Level Stego Ideas

I'm working on an idea to code an app that will essentially:

1. Encode a given string to Base64
2. Reverse the resulting string of characters
3. Generate an accurate phonetic spelling of the result
4. Parse the result through a TTS engine (e.g. Elevenlabs)
5. Reverse the resulting audio.
6. Embed the resulting reverse audio binary within another normal audio file without corrupting the original audio stream.

How easily could such hidden data be stumbled upon? Any ideas would be welcome.