What is first called - interceptor or authenticator? OkHttp, Retrofit

Question

As I read from docs, OkHttp uses lists to track interceptors, and interceptors are called in order.

But what is first being called a list of interceptors or an authenticator?

Answer 1

Reading the source, the authenticator is called by RetryAndFollowUpInterceptor that is added to the call's interceptor list after the client's interceptors. So, client interceptors are invoked first.