Peter Bell

I am so incredibly confused about the relationship between these two poems. Obviously "Peter Bell the Third" is mocking "Peter Bell" because of the alleged author "Miching Mallecho" or mischief. However, Shelley does not dedicate or address Wordsworth in the preface. I don't understand the relationship between the two poems at all or the structure of Shelley's critique/mockery because it does not parallel the original poem. Perhaps the different parts of Shelley's poem model the initial "moon-boat" trip of Wordsworth? And what was going on with that anyways? It seems completely disconnected from the rest of the poem...Dr. Porter, please enlighten me!