The taller item in the yellow circle looks like a generator, used for operating the missiles when the vehicle engine is not running or when the missiles are ground launched. The other part may be the electrical control box connecting the joystick to the missiles.
That’s a great video clip, especially the part where they are shooting at that tank! I built a model of that tank, you can see it here: IDF Looking for volunteer drivers - Armor/AFV / Cold War - KitMaker Network
In a lot of cases, I don’t think the manufacturers know what many parts are, it is in the photo or drawing, so they include it, whatever it is!
Ken