Hi, I have a few questions on Pardot. We are in the process of implementing it on a Org which already has a Pardot instance set up. A few questions that popup:

1. What changes we need to make in the Salesforce instance so it can support 2 Pardot instances? Meaning the Salesforce Org ID are same in both Pardot instances but the Cnames are different.

2. How does Salesforce distinguish the 2 instances?

3. How does Salesforce determine how to route the requests?