Long attempt at trying to communicate from computer to calculator

Firstly I attempted to read through the documentation at https://www.hackspire.org/USB_Protocol/
and work based off of that. This led to a decent amount of work getting done, which was connecting to the calculator and sending a packet to establish a connection. However, this did not go as planned and honestly, I don’t know why this is failing. It seems to be returning the same data back when trying to send different packets.