While in VR I still contribute most of the channels as they run from my body. I just don't benefit from them. Also, once you head into the junction, you won't really have the tacnet benefits until you meet up with Nick, unless you bring Sylvia with you. I won't be in range to help, Nick is currently out of range, and if she's outside Sylvia won't be in range.
Via Simrig CF:
Visual
Audio
Olfactory
Via Glasses:
Smartlink
Low Light
Via Headphones:
Spatial Recogniser
Not 100% sure on it, but I also might provide two extra channels (the audio and visual enhancements on the glasses and headphones),but it's a moot point because the highest bonus we could get with our group would be +3 anyway with all five of us linked up (or now, four of us linked up).