Can POST requests sent from servers be intercepted ?

The data sent via POST method using a form in web browser can be intercepted(captured) using networking tools.

Suppose I have a server A which consumes API from Server B. There is a basic user interface with which I can trigger the API calls (POST Requests) but all the data sent are hard coded , no data is sent from user input or client side.

So, if i am sending POST requests from Server A to Server B can this be intercepted from my network or the request is between those two servers ?