Sorry, I missed your question earlier… Did you actually install sound flower?
The SoundFlower installer places it in: Boot Drive > “Library” > “Extensions” > “Soundflower.kext”
However, unlike as stated in the “ReadMe” file, there were no “supporting files will be installed to /Applications/Soundflower.”
Soundflower apparently is something of an orphan program~project these days with the original creator taking back the reins after a hiatus. Know nothing more about this state of affairs.
So the “AudioMidi” app is (in my case) providing the interface. The main thing is it works. I’ve never had an issue.