# Iframe↔worker is a minted pair

The learner can give an iframe and a dedicated worker the two ends of a minted pair, keep the implicit port as parent↔worker, and reject minting for a SharedWorker’s first stream (`worker.port` / `onconnect`). That is now the floor: the next lesson can spend working memory on closing an extra pipe without killing the worker.

Evidence: the learner said they passed lesson 6 (bridge lab + checks).

Implications: issue #24 still wants teardown — close the extra ends so they can be collected; `close()` is the API, not `Worker.terminate()` and not the `close` event.