In London, the Protagonist approaches Sator's estranged wife Kat, an art appraiser who falsely authenticated a forged Goya drawing. She tells him that Sator purchased the drawing from the forger, Arepo, and is using Kat's authentication as blackmail to control her in their relationship. The Protagonist and Neil plot to steal the drawing from a freeport storage facility at the Oslo Airport.
If the whole reason for the protagonist to meet Kat was to get introduced to Sator, why do they plan such an elaborate plan to steal the original from the freeport? Why was it important at that point in the movie to free Kat fromSator's blackmail by procuring the original?