Complex sentence: Pym's literary career is noteworthy for the long hiatus between 1963 and 1977 when, despite early success and continuing popularity, her publisher Jonathan Cape rejected her manuscripts after 1961, considering her writing style old fashioned.
Split into simpler sentences: Pym's literary career is noteworthy for the long hiatus between 1963 and 1977 when, despite early success and continuing popularity. Her publisher Jonathan Cape rejected her manuscripts after 1961, considering her writing style old fashioned.