
Visible crew/equipment: When the fusion reaction starts to destabilize and Harry shouts, "Shut it off!" to Otto, a boom mic is reflected on the glass doors behind Harry. (00:37:57)

Directed by: Sam Raimi
Starring: Kirsten Dunst, James Franco, Alfred Molina, J.K. Simmons, Tobey Maguire, Rosemary Harris

Visible crew/equipment: When the fusion reaction starts to destabilize and Harry shouts, "Shut it off!" to Otto, a boom mic is reflected on the glass doors behind Harry. (00:37:57)
Dr. Otto Octavius: I finally got lucky in love when I met Rosie here. She was discussing T.S. Eliot, and I was discussing... I still don't know what she was talking about!
Answer: Unless there is is a deleted scene to shed light on the issue, then it's not really addressed in the movie. It's possible that Doc Ock and Harry had a second meeting that took place off-screen in which Ock revealed to Harry where his hideout was, but as there's nothing really to go on, it's anyone's guess and it's reasonable to consider it a plot hole.
Phaneron ★