That's exactly my point, you are agreeing with me. I was refuting the comment claiming that networks were slow compared to on-die comms because of physics and lightspeed.

The signals going through the wire and back are 2000ns in a big datacenter. There are orders of magnitude more delays in the processing of those bits than their transmission through space via twisted pair or fiber.

It's not 10ms to go to the next rack though unless your network is broken. You're much closer to 100us (100,000ns).