Hi,
Are you using onprem or cloud?
Cloud: the answer is no, you can't.
Onprem: The latest versions of BC uses OpenID for authentication. So I would say it is not impossible. But maybe I'm wrong. I would like to hear back from you if you try something.
On another note, I'm curious about the context of your query. Why would a customer make this choice/decision? Can you give more details?