King Ottokar's Sceptre: Part 2 - S2-E5
Other mistake: A museum curator notices that the leg of a dinosaur bone head been stolen after Snowy removed it. During this shot, the dinosaur's foot hasn't moved an inch. How can this be possible? Snowy managed to remove a dino leg with his teeth, so must have dislodged the rest of the bone while doing so. (00:26:55)
King Ottokar's Sceptre: Part 2 - S2-E5
Other mistake: When the singer starts singing in the car, there is one shot of a guy with an umbrella walking through rain. He walks through a puddle, but without causing a ripple. (00:25:55)
Chosen answer: If Hector was seriously intent on removing King Ottokar's scepter from the glass cage holding it and launching it through the window with the camera, then Hector would have been forced to knock out the two guards so they would not have interfered with Hector's plan as soon as he removed the scepter from the glass. As for Hector, himself, was explained when Tintin was explaining how Hector stole the scepter. Tintin placed a twig inside the camera and it launched out of the camera. Hector would have placed the scepter inside of the camera, and would have been knocked unconscious due to the spring effect created when the scepter had been launched.
Casual Person