The connections history is a visual way of checking the volume of connections made and who has done such connections.
There’s a line-graph to check the evolution of connection-building throughout time. The color coding in this graph consists of two main colors, black (your organization) and red (Lengow team), used to differentiate the teams responsible for the connections. You can also get to visualize more colors that will represent specific authors/users responsible for a given amount of connections.