What if man interfaces with an ai, and creates a brain that's 500x enhanced over modern humanity, and perhaps even 'linked' to other brains? Creating some sort

What if man interfaces with an ai, and creates a brain that's 500x enhanced over modern humanity, and perhaps even 'linked' to other brains? Creating some sort of hive brain? Neuralink is already testing on humans or about to, and doesn't seem a far off notion that we'll be able to google or ask chatgpt questions directly from our thoughts, eventually our inner monologues might be an actual ai talking to us, etc.