In this point in time it looks more and more likely that Callandor is being considered the key to re-sealing the bore, which begs the question of why it was not being considered in the Age Of Legends.

The men of the time favored using seals which ultimately led to the taint and the breaking of the world. The women favored using the Choedan Kal, which if used against the DO would have meant the destruction of creation, but was ultimately needed for the cleansing of the taint. This seems to be a perfect example of the workings of the Pattern. Now with that being said why didn't the pattern just push LTT to use Callandor to re-seal the bore in the first place?