Do you have regular completed NG save? Then it's possible. Play BAW with that save (and HoS if you like) and then start NG+.I think it depends: I would like to play again Wild Hunt and HoS using the new system of habilities and mutegens, so, if possible, I would like tu play first Blood and Wine, unlock the new habilities, and then play the whole game + expansions, but I don´t know if it´s possible. Anybody knows if its possible to play the whole game using the new things that B&W introduces?
On metacritic Alot of them are like saying it's about 10 hours for hearts of stone and on gamespot and interviews with Devs say blood and wine is about 20 hours, of course play time length in open world type games with Alot of stuff to see and do apart from just story it allways takes me way longer anyways but I'm sure they even advertised hos being around 10 and blood and wine around 20, I'm guessing they mean just blitzing through story, though wouldn't think they meant skipping cutscenes, anyway thanks for the tip mate.