Bridging the gap. It’s an idiom used to connect two things, making the difference between them smaller.
Sometimes in life there is a gap. It may be the difference between something we learn and applying it. Or, it may have something to do with the future or uncertainty.
There are many examples.
For instance, when we walk across the street we bridge the gap with trust by believing the drivers are going to act in a certain way. Hopefully, in a manner so they will not run us over! On the road, we trust that drivers will stay in their lanes. We believe the airline pilot will be sober and alert.
To trust is to believe that someone is going to act in a particular manner.