How did Giovanni Battista Piazzetta influence Giovanni Battista Tiepolo's early paintings?

During the early stages of his career, Giovanni Battista Tiepolo was significantly influenced by his Venetian contemporary, Giovanni Battista Piazzetta.12

Piazzetta’s impact on the young artist is particularly evident in the robust plastic modelling found in Tiepolo’s early works, such as the monumental Madonna of Carmelo and the Souls of Purgatory (c. 1720). While Tiepolo’s artistic education was multifaceted—drawing from various Venetian and foreign contemporaries as well as older masters—Piazzetta served as a powerful influence around 1717, a period when Tiepolo was establishing himself as an independent painter.21

This early phase of Tiepolo's work was characterized by a melancholic style and strong chiaroscuro, or dramatic contrasts of light and shade, which aligned with the artistic climate Piazzetta helped shape before Tiepolo eventually transitioned toward brighter colors and more mature expressions in his later frescoes.2