The rotating pair can send independant signals. Thats why USB-C have more or less the same speeds than HDMI, while the HDMI have 22 connectors. Compare what i

The rotating pair can send independant signals. Thats why USB-C have more or less the same speeds than HDMI, while the HDMI have 22 connectors. Compare what is comparable, you can't use your USB-A to display 4K-60Hz video, but you can with your USB-C, or HDMI.