I upgraded to the RC card yesterday and it's already showing up in my Chase account, with the same number as my Boundless Visa. What is the process to activate PP? The rep I spoke to said it can be done immediately. On Priority Pass site, I tried to activate using my Boundless card number, but backed out when I got to what looked like a payment page, where I was asked for card details and billing address.
You call Chase to ask them to add PP for you. If the rep does it right, you should receive the PP physical card in the mail, then you can register online.
Edit: If you don't receive PP card in the mail after 4 weeks, call Chase again.