Complex sentence: Allen's biological son, Ronan Farrow (formerly Satchel), remains estranged from Allen and has said that he believes Dylan; an article of Ronan's in "The New Yorker" in November 2017 helped uncover the Harvey Weinstein sexual abuse allegations.
Split into simpler sentences: Allen's biological son, Ronan Farrow (formerly Satchel), remains estranged from Allen and has said that he believes Dylan. In 2017, Farrow's work in "The New Yorker" helped uncover the Harvey Weinstein sexual abuse allegations.