Hi @William Duley,
You were right about, Not sure if a new thread was the correct move? Since you already answered this question in the link below.
Also, after reviewing the Mathworks documentation listed below,
It seems integrating SocketCAN into Simulink on a Windows machine will be complex due to the Linux-centric nature of SocketCAN, however, leveraging WSL or a virtual machine might help facilitating this process.