Doesnt supprise me in the slightest Nissan like to add things to the task list, it keeps them in the job
Dont have to be done at the same time, but for the labour costs, its usually best to get them both done. Saying that, its usually people who need the clutch doing that get the flywheel, not heard of anyone who has the flywheel and thinking of doing the clutch! How old is your clutch? Might be worth replacing it, or hold off on the flywheel until you need the clutch?