While thinkers of the material turn offer new conceptual resources for talking about non-human ontologies, interaction researchers are trying to reassemble the social situation fragmented by telecommunication. Conversation analysts tend to see technical objects in their situation-constitutive role, but they can also disrupt the current projects of the participants whilst remaining "unseen and unnoticed" (e.g. Zoom delays). We propose a conceptualization of the relationship between the participant and the interaction environment as a source of agency, which makes it possible to (...) preserve an emic perspective. We illustrate our thesis by analyzing a case study of interaction between a Deaf and a hearing participant in VRChat. In this case, virtual pencils that leave durable inscriptions in the air are used by participants for communication. We analyze a simple question-and-answer sequence and demonstrate that: the participants treat the inscriptions as material; the hearing participant is less capable of communicating in this space than the Deaf person; the answer to the question is produced jointly due to the instructional work of the Deaf participant. The results allow us to draw the following conclusions about the nature of materiality, agency and communicative competence: 1) the materiality of the environment is not a purely analytical category, but is constructed by the participants in the interaction; 2) the agency of the participants depends on the environment and at the same time has a distributed character; 3) communicative competence is not directly related to the "internal" characteristics of the agent, such as atypicality. (shrink)