[Itachi doesn't know all the details surrounding his death, only what he's been told, so this confuses him a little. He lifts his head just slightly, eyes obviously wet but expression baffled.]
... I thought you said that you'd killed me?
[What part of that had involved them working together? Sure, Sasuke had mentioned some other events that followed, but one didn't go much beyond death.
[action]
... I thought you said that you'd killed me?
[What part of that had involved them working together? Sure, Sasuke had mentioned some other events that followed, but one didn't go much beyond death.
At least not in most cases.]