Oh that much I understand. I’m picturing sending three utxos in three separate transactions, all to the same address (ie no address rotation). I know when I spend the total value from that address it will use all three utxos and they will combine into a single UTXO when they land at their new destination.

But what I’m not sure about is whether they’re treated as three UTXOs when I initiate that new transaction? Ie if it’s a single fee or a 3x fee to smelt the coins lol

Gonna test it out later 🫡 

 I think you’re mixing utxo and address definitions. You can have multiple utxos on the same address and thats what would happen in your example.