Been looking at this thread and thinking…
I think the problem with fetch (and the iframe) in the case of LiveView is that it probably doesn’t help make the live navigation (over the persistent WebSocket connection) any faster, and brings questions about behavior.
JS fetch would probably cause only a “disconnected mount” of the prefetched page/LiveView, while the iframe would trigger both disconnected and connected mounts with a full LiveView process on the server which can’t really be reused when the actual navigation happens.
