So it turns out that the 740 and X5 do not use the exact same vacuum hose setup:

On my X5, "A" is capped off.

"C" connects to "B".

And yes, the Bentley manual is useless when it comes to things like this.

The CCV is also a lot harder to access on the X5. There is more stuff in the way than with the 740.

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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)