unless the DOJ does something you could have footage of Biden and Hunter both railroading natalie while high fiving zelinksky to do the eifel tower and having piles of money being given to ukraine and still nothing would happen the entire public could know this and the DOJ and all their employees would still be sacks of shit.
It may not even have to be a cover up but just paper shuffling and putting all the cases on the bottom of the stack so they are considered low priority. They are still technically looking into it but just choosing to make it not important and pushing off any release till it is beneficial for them.