 KES and KSS reached an agreement in 1912 to coordinate their services better.This first materialized in a connecting line in Hegdehaugsveien, which allowed trams to run from Stortorvet via the Ullevål Hageby Line to Majorstuen.At Skillebekk a connection was built through Munkedamsveien, allowing the Vestbanen Line access to the Skøyen Line.