No, Starship, or to be more strict, Musk proposal is very different. First, already existing hardware have much less energy dense. Second, it's engines use anot

No, Starship, or to be more strict, Musk proposal is very different. First, already existing hardware have much less energy dense. Second, it's engines use another fuel, also much simpler to handle. Once I hear idea, to make for S-5 additional "zero" stage with displacement feed engines, and this would be necessary simplification, to make subject idea viable, but it never happen.