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Hi, I am playing with the Flow to download files. I want to start a coroutine and return channel immediately. But channel returned from the ViewModel when startDownloadSendChannel() completes. I hope I could explain.

Try to break down the problem into more composable pieces. Right now you're thinking in channels and channel management, but you don't have to do this with flows.

A flow is a factory for subscriptions. It only does work when it's collected, and may be collected multiple times, creating independent work streams for each collector.

When you write a function that returns a Flow, that function should do no work of its own, it should only construct the Flow so that the Flow knows how to do the work when a caller collects it.

Right now your `DownloadController.download` method is doing a _lot_ of work of its own - it is itself a `suspend` function, it's performing `launch` operations that create child jobs of the `withContext` block's scope and don't permit the `withContext` block to return until those launched jobs are complete