I’ve just started to wonder why he does this. I mean – it’s not as if he’s planning on trying to pretend he HASN’T killed Polonius – so he’s not hiding the body for purposes of avoiding the consequences. He knows what consequences are coming. I suddenly just wondered if this is a gesture of kindness towards Gertrude. I mean, he’s removing a dead body from her bedroom – and not taking it far – just the room nearby. I’ve never seen it played with tenderness – but I’m suddenly quite curious about playing it that way.