Dell'Acqua was born in Milan to Giovanni Dell'Acqua and his wife Giuseppina Varalli. He studied at the seminaries in Monza and Milan (obtaining a doctorate in theology from the latter), and the Pontifical Gregorian University in Rome, from where he earned a doctorate in canon law.
Dell'Acqua was born to Giovanni Dell'Acqua and Giuseppina Varalli. He pursued higher education at various institutions, including seminaries in Monza and Milan, which ultimately led him to earn a doctorate in theology from the Pontifical Gregorian University in Rome.