I'm going to be hunting a vacuum leak on my 4.6 and will have the engine cover off. I'll take some photos and post later today.

I also just fixed a vacuum leak on my 740 (also an M62TÜ) and replaced both lines on the back of the CCV. Now that I think about it, maybe (C) goes to (B). And (A) goes to the fitting on the intake boot (near the throttle body). I'll double check and get back to you.

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2002 X5 4.6is - Imola Red/Black (Sold)
2001 740i M Sport - Anthrazit Metallic/Black (Sold)
1998 M3/4/5 - Technoviolet/Dove (Sold)
2003 Z4 3.0i Sport - Sterlinggrau Metallic/Black (Sold)
2009 Mini JCW (The Wife's)
2015 i3 REx - Arravani Gray/Tera World (Daily Driver)