I dunno. Anu's definition was that of a process, so, given that definition, I'd go along with the idea of its being redundant*, with the disclaimer of my first post. If we are defining it as a state, the rapprochement process is the process of reaching that state. I still see no problem with that usage. But I'm just one voice in the AWAD Usage Panel.

*Remembering that the language is full of redundancies, many staunchly defended by the most prescriptive of grammarians.