Another way to do this would have been going Hagen Hbf to Frankfurt Am Main Hbf via Gießen missing sections are Ruhr-Sieg Süd Finnentrop Siegen Dill Line Gießen Siegen and Main Weser Bahn Kassel Marburg Gießen Frankfurt Am Main Hbf. Pretty much the Intercity line 34 which is the DB BR147 on Ruhr-Sieg Nord. The long term goal for DTG is forming a route network. Best place for this is the Ruhr Valley region NRW Germany by filling in the gaps between RRO SKA HRR and Ruhr-Sieg Nord. HRR RRO RSN can be linked if DTG builds Hagen Vorhalle then the massive 1988 built Bochum Langendreer junction Wetter Ruhr Viaduct. HRR SKA link are Duisburg Mönchengladbach Aachen railway and the Duisburg Düsseldorf Köln line.