Caldigit ts3 downstream and host thunderbolt explainer?

Hi MPUsers
Been doing some looking around for a powered usb-c doc and considering the Caldigit TS3. Can someone explain what they mean by “host” and “downstream” when it comes to the Thunderbolt ports? I assume downstream is data from the computer but would love some clarification.
As for the whole thunderbolt, usb-c mess. Yikes.
Thanks all.

Host would be the connection to your computer and downstream would be the connection to another Thunderbolt device.


Makes so much sense when you say it like that (!) Thanks so much.