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Both get air for the cabin from the nacelle. 787 doesn't share air from the jet intake.
I suggest that you fact this. The 787 is a bleedless design in order to improve thrust efficiency and cabin air quality. It's one of the biggest selling points of the plane. Increases engine efficiency by about 30%, or so Boeing claim. I even posted a photo of the cabin air intake, tellingly about 20 feet away from the nacelle.
Anyway, to reiterate my point from earlier, cabin air quality sucks on all planes but sucks less on a 787.
Edit: the 30% figure is nonsense as I described it. It reduces power taken from the engine by 30%, it doesn't improve efficiency by that much overall.
Stonehedge
@lynx
Howard - fresh air arrives via a vent inside the engine nacelle
Stonehedge - Apart from on the 787, which draws fresh air in from vents in front of the engines
Both get air for the cabin from the nacelle. 787 doesn't share air from the jet intake. EDIT: I was wrong it is from the fuselage on 787 not the nacelle.
The 787 air system was to be the improvement in cabin air quality as there was/is a court case about harmful toxins.