Complex sentence: When McCartney first heard the Spector version of the song, he was outraged and nine days after Spector had overdubbed "The Long and Winding Road", McCartney formally announced the Beatles' breakup.
Split into simpler sentences: When McCartney first heard the Spector version of the song, he was outraged. Nine days after Spector had overdubbed "The Long and Winding Road", McCartney formally announced the Beatles' breakup.