OWC Rocketyard Blog on M1 Macs actually having 2 Thunderbolt busses with only 2 ports

The OWC RocketYard Blog has a really interesting article on how the new M1 Macs actually have 2 thunderbolt busses even though they only have 2 ports. This is unlike previous Thunderbolt macs which had 4 thunderbolt ports, but only 2 busses, with 2 ports split on each bus. The new M1 Macs have only 2 ports but 2 busses, and with the new ability to use USB4 Hubs to split thunderbolt you can have the more ports.