Neither, actually, but there are many useful allegories in the Pilkington video. I was actually referring to the Chinese walls that are meant to exist in the City but which are sometimes observed in the breech. I don't think the Great Wall of Huntingdon is like that at all. There is very effective segregation between Meridian and MQA Ltd, although a few people do wear more than one hat.

Streaming: Roon, NUC, QNAP869 NAS
2ch system: dCS Vivaldi, Audionet Stern, Audionet Heisenberg, Magico Q1
Retro system: 101/104/105, Red Rose Spirit