Can certificate-based and token-based authentication be used in parallel?

Is it possible to send remote notifications via APNs to an iOS app from two provider servers one of which uses certificate-based authentication while the other uses token-based authentication? The documentation states:

To send notifications, your provider server must establish either token-based or certificate-based trust with APNs

However, this only applies to one server and not two.

StackOverflow: https://stackoverflow.com/a/51726097