Cook the pasta according to the instructions on the packet. 3-4 minutes before the pasta is cooked add the broccoli and continue cooking. Once cooked, drain and reserve 4 tbsp of the pasta water.
While the pasta is cooking, heat the oil in a large frying pan. Add the garlic and cook for 30 secs, add the salmon and cook the cubes for approximately 1 minute on each side.
Mix the mustard and orange juice together and pour over the salmon. Add the dill and orange zest and bring gently to a simmer.
Add the drained pasta and broccoli to the salmon mixture and gently fold through the sauce. Add the pasta water, gently stir through, season with salt and black pepper and serve sprinkled with the remaining chopped dill.