Howling:The Pandorica and The Cracks are unrelated?

River tells The Doctor in FaS that she already knows about the events concerning the Pandorica, and the Doctors adventures with it.

However, she doesn't know what the cracks are or what causes them.

Does this mean they're two separate plot devices? Ghadius 18:12, May 3, 2010 (UTC)Ghadius