Similar to the Campeonato Brasileiro, groups during the reduced series, for example B and C, is often promoted to the highest division yearly. In the case of Italy, only the top three groups in Serie B are promoted to Serie A (in Brazil, advertising takes place for four teams in https://k-o-nh-c-i-chu-n43196.dreamyblogs.com/38026099/the-2-minute-rule-for-what-is-serie-a