Who left Paul's imprint for Echo? Topher, right? Adelle said Topher said to tell Echo to start with the chair. Wow! He paid Echo back for removing Paul's love for her.
I thought it was Alpha?! I can't imagine Topher was in a fit state to have anything to do with the chair, nor think about Echo individually, purely because he couldn't think past anything about his own task. I think it's appropriate for Alpha to have done it considering what he did to Paul in the first place. And I thought it was Alpha that Adelle said told her to destroy all the tech starting with the chair?