Sadly that's how appeals work. Even if the appeal would be started mid race you probably couldn't get it done before the race was over because this is one of those cases where the rules are so precise you need to get down into the specific to figure out if anything there even is anything to penalize. Even Audi isn't 100% sure they have a case because at the moment of the article it's not a formal appeal, they're signaling an intent to appeal so they'd have time to go over the rules and make a case.

Unless Audi finds some niche interpretation of the rules I don't think Tsunoda gets a penalty because from what I've read so far Tsunoda acted in accordance with the rules. Most likely what we'll see is an addition to the rules regarding the starting angle of the car within the grid box so there would be a clear interpretation of the rules if it were to happen again.