Acts are related by two plot factors or turning details, with the initial turning stage connecting Act I to Act II, and the 2nd connecting Act II to Act III. The conception with the three-act framework has actually been attributed to American screenwriter Syd Discipline who explained plot structure in https://www.farukhnagarplots.com/how-farukhnagar-and-pataudi-are-becoming-key-real-estate-destinations-in-2025/