1 address with 0.2 but 2 utxos. You need to send both 0.1 utxos to new address to consolidate

2 utxos with 0.1 each, both referencable by the same address.

Still 2. To merge them, you have to use them as inputs in a single transaction.

As everyone else already sed

That's why it generally (but for some very specific cases) doesn't make sense to send multiple times to the same addressYou'lll still have the same ammont of UTXOs and you link them together forever