No disrespect intended, BUT I always assumed that neither sister was going to give the other the satisfaction of dying first. Maybe, I thought, both might live forever. Today, Joan finally, so to speak, lost. A few decades ago they were seated on that riser for the 50th Anniversary Oscarcast and perched as far away from one another as was physically possible. At least they didn't have to work together 24/7 like soulistes Sam and Dave who also were total non-communicado.
Alas, Audrey Totter, Eleanor Parker, Fontaine, and Peter O'Toole all within a few days of one another.