Is beef Wellington just a glorified pasty?

Beef Wellington consists of beef tenderloin coated in duxelles and encased in puff pastry. I've made it before with wild mushrooms and it was OK but I couldn't help feel it was just a glorified expensive big pasty.

Have you ever had beef Wellington and what's your opinion on it?
Is beef Wellington just a glorified pasty?
Is beef Wellington just a glorified pasty?
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