I asked this on another site, but I thought I would see if anyone knows here. Wondering if someone knows what the physical difference is the makes the HDMI versions different. I get the spec differences and what each version does, but what makes one cable pass 8k\/60hz and the other can't. I thought cables are copper wiring with connectors on each end. What difference is in the actual cable that makes it able to pass higher bandwidth, channels, etc? Thanks.