Looking through a Nintendo strategy for the Oracle of Ages/Seasons I noticed that the three Harp of Ages symbols are the same as the three pearls that were used it The Wind Waker. I mean, I don't know if anyone has noticed, or if this is old news, but I thought it was a very interesting find.
I'm thinking that this might make the connection between The Wind Waker and Oracle of Ages stronger, and more apperent, but then again maybe it doesn't.