Not sure what to tell you. If you search for "PowerShell Progress Stream", you'll find all sorts of examples that use the approach I mentioned, using the S.M.A. PowerShell object, then monitoring its Streams.Progress collection for new data. This is what the PowerShell host is doing to show you the progress bars in the first place, in fact.
I didn't find any examples of a way to accomplish this when you're just executing a cmdlet normally from within the PowerShell console.