Thanks for the response! I was looking through the QB Commerce info, and it seemed that for my specific purpose it may not be the right fit.

For one site, it would be custom products that go into manufacturing, and the other would be on demand printing.

Currently BigCommerce is synced with "BigCommerce Connector by Intuit"
Could I simply add "WooCommerce Connector by Intuit" and have both plugins working independently with no issues? or Inventory showing up from "bigcommerce to woo" and vice versa?

Thanks in advance!