What can go wrong when converting between RxJS and Angular signals?

When the bridge lives in a long-lived root service, automatic cleanup at component destruction may not match the intended request lifetime, so ownership must be explicit. I avoid creating conversions inside computed or effect bodies because that multiplies subscriptions and violates the reactive boundary. Tests verify one upstream subscription, the initial state, synchronous-source assumptions, errors, teardown, and rapid replacement of inputs. If the feature spends most of its code translating models, I choose one primary representation and reduce crossings.