Similar to this, RetroBytes (the Youtube channel) did a video on the origin of Cisco recently which is worth a listen at 2x https://youtu.be/NXTdwzjiW7E?si=bCVpmEkyf1UUCfyR
As for his British accent, I find him understandable at 2x speed, but there are many others I can only listen to at 1.5x