Our feedback through practice and training over time on multidisciplinary systems engineering has leading us to question on what forms the tangible togetherness of a man-made wholeness to control multiple situations examined as a simplex system of systems. We examine the essence of the energy togetherness that makes tangible the anchoring onto "reality" of a phenomenologically framed situation-system "in engineering" by an interdisciplinary orchestration process of multidisciplinary knowing-how and knowledge. The energy togetherness of the connectedness dynamics of a system-situation wholeness depicted in form of stock-flow models is checked by multidimensional analysis of the power bond continuity with respect to fields and engineering multidomain realities. We first apply this scientific situation and system thinking corpus to maintain the energy togetherness of the situation-system wholeness in the discrete processes domain to examine the lack of energy bonds between production, logistics and consumption on the one hand and between productdriven control including human in the loop on the other hand, to satisfy cyberphysical consistency. A second case-study domain relates to comfort at work to point out the oxygendriven energy bond in order to maintain the physico-physiological connectedness between the human energy factory and the indoor air factory at a contained situation-system scale. A third case-study deals at the broader scale of the electric generating domain with the cyberneconduction-driven controllability of the reticular connectedness of the many upstream and downstream discrete energy situation-system in order to maintain a grid power togetherness between consumption and production. Innovative perspectives are given from each case study before emphasizing in conclusion the necessary congruence between the energy togetherness of a field situation-system and the interdisciplinary harmony of the responding engineering situation-system.