I tried briefly to figure out how to get them to communicate in a way that would at least be visible in Telegram, but quickly concluded it'd require a lot of custom hackery.

Honestly I'm probably more likely to build my own OpenClaw-mini with a custom client app. Shoehorning client connectivity into an existing messaging app borderline feels more complicated than just having an LLM build a minimal client app from scratch with full awareness of the backend capabilities.