The first operation involves the downloading of blocks. While it is true that Bitcoin Core can request multiple blocks simultaneously, the processing of these blocks remains a sequential task. This approach ensures that blocks are processed in the correct order, maintaining the integrity and continuity of the blockchain.

The significance of sequential block processing cannot be understated. It plays a crucial role in verifying the validity of transactions and the blockchain's state at any given point. Although the downloading of blocks may occur in parallel, this methodical, sequential processing is critical for ensuring the security and reliability of the Bitcoin network. By adhering to this procedure, Bitcoin Core effectively balances efficiency in data acquisition with the meticulous verification required for blockchain continuity.