I think we're piecing it together. So, perhaps one way or another, they got Teach's blood sample and once analyzed, Saturn stopped any research as he realized what made him so unique.
Then, after Amazon Lily, when he saw the Seraphim, Teach realized they could have said blood and he ordered its destruction.
Then, after Amazon Lily, when he saw the Seraphim, Teach realized they could have said blood and he ordered its destruction.
But since they said their plan succeeded, I'm guessing it isn't that