TheOrangeWay Cable was good but the port i used was the one on the hub station
Since the option to use WebUSB API was added (web installation method), the guide specifically mentions in the prerequisites:
You should avoid using a USB hub such as the front panel on a desktop computer case. Connect directly to a rear port on a desktop or the ports on a laptop. Many widely distributed USB cables and hubs are broken and are the most common source of issues for installing GrapheneOS.
@X43 with regards to your initial question:
What could disrupt the WebUSB Install in Vanadium
Some reference this WebUSB API spec draft as a resource for technical descriptions and error information: https://wicg.github.io/webusb/