Help Wanted Audi S4 b7 v8 inlet manifold pipe

[Sidsy]

Hi there am looking for some help, doing some work on my s4 v8, have removed inlet manifold, and have found on the throttle housing, a couple of pipe connections with nothing on them, marked in my pic, they are connected together through the housing, but can't see any pipes which go on them, don't know if they are important, but I don't like to see thinks not connected, any help would be appreciated.