Whether bilingualism influences executive functions is a topic of intense discussion. While some studies have supplied evidence of increased executive functions in bilinguals compared to monolinguals, other studies have not found advantages. This inquiry explored whether high opportunity of language switching could contribute to bilingual advantage. Advantages have been consistently found with Catalan–Spanish bilinguals who meet with frequent opportunities of language switching. Fewer opportunities are experienced by speakers of Italian and one of the Italian dialects, the participants of this inquiry. It expected decreased or no advantages with these participants. In Experiment 1, subjective estimates of familiarity with dialect failed to display a relationship with performances in different tasks covering executive control. In Experiment 2, the inquiry compared Italian–Venetian dialect bilinguals to Italian monolinguals in the flanker task, and no advantages were found either. Contrasting with results from Catalan–Spanish bilinguals, the results propose that language switching plays a role in bilingual advantages.