How did Peter Paul Rubens possibly influence Giovanni Battista Tiepolo's work in Germany?

The influence of Peter Paul Rubens on Giovanni Battista Tiepolo is most notably observed in the works Tiepolo created during his time in Germany, particularly his frescoes at the Residenz in Würzburg.1

While Tiepolo’s earlier career was largely defined by Venetian influences, his stay in Germany starting in 1750 provided him with the opportunity to become acquainted with the works of artists like Rubens and Rembrandt, who were not well represented in Venetian collections at the time. Scholars have identified the influence of Rubens in the rhythmic grandeur of Tiepolo's decorative sequences at the Residenz, such as the Wedding Allegory on the ceiling of the Kaisersaal and the solemn Adoration of the Magi (1753).1

It is important to note that while this connection is widely recognized by art historians, it remains a possibility that his direct exposure to these masters during his German residency served as the catalyst for this stylistic shift in his mature work.1