I would assume it would need to be something like Simpleswap that would have a specific address that would be expecting a certain amount or something. I don't know, I have my smart moments, but not that smart to know how or it would already be done, lol. I normally use the internal exchange in the Cake Wallet that uses various centralized and decentralized liquidity sources to swap from LTC or BTC. To go from Hive, I just use Simpleswap. But I am looking at things like Bisq which you have to download to your computer and it connects through TOR I believe. It's just not like what a traditional Uniswap like DEX or even centralized exchange looks like. It's more like what LocalBitcoins and LocalMonero were.