Classrooms are institutional social spaces where there is microlevel interaction that is embedded in wider sociocultural and sociopolitical institutional contexts in a society. In mainstream schools, they are intended for socialization, curriculum learning, and assessment. As such, they are spaces where students' full range of linguistic and semiotic expression may be leveraged (Cummins 2007) in their interaction with individuals that are often outside students' normal communities (Anderson 2018). Being part of a layered structure of institutions in a nation, the classroom is considered "an immensely rich site for the investigation of the processes of social and cultural (re)production and the relationship between micro classroom and macro institutional processes" (Tsui 2017: 194).Classroom interaction research dates back some seventy years, with early work leading to insights that classroom processes are extremely complex (Tsui 2017: 188). Multilingual classroom research emerged in the 1980s out of a concern for the education of language-minoritized children (Martin-Jones 2015; Aline and Hosoda 2021). Since then, increased mobility across the world has led to today's multilingual classrooms housing individuals with highly diverse translocal linguistic repertoires. This is mirrored by the recent immense increase in scholarly interest in multilingual language use in education, notably in studies of translanguaging pedagogy (