For anyone reading this and having issues finding a fuse that goes off with the ignition, you have to switch the ignition off and wait around 2 to 3 minutes before you test any fuses. For me it ended up being an empty slot the top row in the passenger footwell.
2019 Audi A6 S-line, Tech-pack
Mini tap fuse.
Note, I tried a few before I found out the information one of which caused a lot of error codes on the dash... fine now though.