Fully remote first job, six weeks in, and I still haven't had a single unplanned conversation with a coworker

Everything is scheduled. Standup, one 1:1 a week, the occasional pairing session that gets booked in advance. No hallway chat, no overhearing someone debug something interesting, no accidental mentorship. I know remote is what I signed up for and the flexibility is genuinely great, but I didn't expect the isolation to hit this specifically, like I'm missing the version of onboarding that happens by osmosis. Anyone figure out how to manufacture that when nobody around you is doing it naturally?