#1 is so important I called Pepco to put my husband’s name on the electric bill, and we sent them our joint Verizon cell phone bill. Really.My guess would be they probably have 2, 3 & 4. I'm pretty sure they were living together while they were in Michigan, and given the length of their on-ice partnership, one would hope they'd be able to answer personal questions about each other. But #1 might be harder, especially if one or both of their parents were paying the bills.
ETA - at least they haven't announced a country switch and continue to insist they will be competing for Russia in the future...