The retreat meeting of the SuMo-Rhine project took place from the 18th to the 19thof February 2020. Since it is half-time of the project period, the co-financing partners, DFIU, KIT-ECON, Universität of Freiburg, Universität of Koblenz- Landau, Université de Haute-Alsace, Université de Strasbourg and CNRS met in order to present first project results and to discuss, how to link the different working packages.