In heritage language (HL) research, prosodic aspects of heritage speakers (HSs) speech have only recently started
to receive attention and the results have been mixed. While some studies report cross-linguistic influence (CLI) for HL
intonation, others consider it robust. The present study contributes to this debate and examines the intonational patterns of
polar questions (PolQs) in the two languages of 30 HSs of Italian with German as majority language. This language combination
displays overlapping and distinct intonational patterns in PolQs, making intonation potentially subject to CLI in bilingual
language acquisition. The results of an elicited production task indicate that HSs maintain a systemic difference between their
two languages. In German, HSs produce PolQs in a monolingual like manner. In Italian of HSs, both monolingual-like performance and
CLI from German has been observed. Early Italian use is beneficial for monolingual-like outcomes in the HL.