“…These include the development of clear rules and obligations (Drda-Kühn and Wiegand, 2010; Föhl and Pröbstle, 2013; Hausmann, 2019), the clear definition of common goals and responsibilities (Neumeier and Pollermann, 2014; Föhl and Pröbstle, 2013; Hausmann, 2019; Du Cros and McKercher, 2020), and concrete added value for each of the actors involved (Föhl and Pröbstle, 2011; Hausmann, 2019; Du Cros and McKercher, 2020). Within the cooperation, good communication (Föhl and Pröbstle, 2013; Hausmann, 2019) and the exchange of resources and competences, which ideally complement each other (Föhl and Pröbstle, 2013; Raich and Zehrer, 2013; Neumeier and Pollermann, 2014), are also necessary. This can be ensured by sufficient coordination of joint activities (Föhl and Pröbstle, 2013; Neumeier and Pollermann, 2014; Hausmann, 2019; Du Cros and McKercher, 2020).…”