However, the saved connection between Gumpendorfer Straße and Matzleinsdorf threatened to have a negative impact on the future operation, because the belt line from the main customs office station would not have been possible without a change of direction. To compensate for this deficiency, the responsible persons therefore integrated in 1896 at short notice still a connecting curve between the stations Brigittabrücke on the Danube Canal Line and Nußdorfer Street on the belt line in the planning. This short crossbar was henceforth usually referred to as a connecting curve or connecting arch, but in some sources is not considered as an independent route, but only as part of the Danube Canal Line.