Addendum from OP: What if Hydra doesn't know that Bucky's memories aren't actually being erased? What if they think The Chair is fully erasing his memories? How could they tell the difference, really? They wipe him, then ask him questions to see if he remembers events or information from before the wipe, and Bucky's memories are fragmented and scrambled, so he can't piece together answers to their questions, and they incorrectly conclude that the memories are completely gone. What happens, then, if Hydra realizes that Bucky's memories aren't being erased?