https://www.hackengineering.co.uk/pr...camshafts-s54/
I haven't found anything relieable but if I would guess the standard duration would be around 272/264 with a 12 mm lift. The BMW S54B32 training module says 12 mm lift on both cams, doesn't say anything about duration.
https://www.billswebspace.com/MS54B32TrainingModule.pdf