I didn't know about this benefit. I received the Business Platinum couple moths ago so I will check to see if this benefit is covered under the Biz-Platinum. If it does, I wonder if this coverage is in effect even if not traveling for business.
It would appear that "covered family member" (spouse or domestic partner, dependent up to age 23, or age 26 if full-time student traveling on the same trip itinerary as the Card Member) is covered. So no need to make them (family members under age 23 or 26 full-time student) AU?