Blackout
A market buy from the pool that lands in a wallet with no history. Your main wallet never holds the coin. You burn a little $HUSH for it.
The coin goes to a never-used wallet, and this wallet burns the $HUSH above in the same transaction. Your main wallet never holds the coin, but the fill is on chain, so anyone who looks it up can see both wallets.
What it hides
The coin never touches your main wallet.
Anyone tracking that wallet sees no buy and no new holding. The coin shows up in a wallet with no past.
What it doesn't
The fill itself is on chain.
Look up the transaction and both wallets are in it. Nothing is pooled, mixed or delayed.