Playlist Total/Remaining Duration

As far as I can see, Playlists only show (in realtime) each individual show's expired and remaining durations.
What I'd like access to is continuous remaining Playlist duration.

I can see the total static duration (and number of shows) in the lower bar, but realtime remaining duration of the complete playlist is my dream goal, ideally as a selectable option to individual show remaining duration.

Is this possible?
Thanks for any help.
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