It maybe doesn't help that you've got a 300 series filter box in a 200 series vehicle.
In the 300's that filter box fits on top of the inner wing with the inlet pointing forwards.
The snorkle you have looks to be one for a disco without ABS, meaning that the inlet enters the engine bay just in front of the washer bottle. If this is the case then you have a part of the snorkle missing that will let you connect the two together.
On mine, the normal inlet is blocked off and you have to cut a hole in filter box on the engine side of it. The part you have missing is then bolted over the hole and sealed, the other end then plugs into the snorkle in the inner wing.