For me it's hard to describe but I get a feeling of knowing how the other person feels from a face to face meeting. Keep in mind, this only works for people I know well and in person (close coworkers, girlfriend, etc.). I still get this over a video chat but it's at a 10% level so I feel like I'm operating without one of my senses.

I often express myself poorly and this extra feeling helps me realize it and take some corrective measures. Really helpful when trying to communicate a difficult technical concept.