No, not in the US. However, given a month or so with knowledge that you're leaving, I would imagine that as this person is training their replacement they are

No, not in the US. However, given a month or so with knowledge that you're leaving, I would imagine that as this person is training their replacement they are also spending their time searching for a new role that fits better. Once it's out in the open there's no "hiding" interviewing at another place.