In a virtual sequential object-transfer task, Török et al. (2019, Psychological Science) demonstrated that people choose between different paths in a way that ensures the minimization of collective costs. Here, we test this coordination coefficiency during social interaction in a real-life context. Thirty participants were asked to carry a ball from a start location on one corner of a 10x10 m square to a goal location in the diagonal corner on the opposite side. The square was divided by a horizontal barrier with two openings to the left and right side of the midline and a vertical barrier of the same or different lengths on either side of the midline. Participants performed alone or in dyads by handing the ball over to another participant at one of the two openings in the horizontal barrier. Because of the different lengths of the vertical barriers, this resulted in congruent conditions, where the short subpath from an individual perspective corresponded to an overall shorter path for the dyad, in incongruent conditions, where the short subpath led to an overall longer path for the dyad, and to neural conditions, where the two overall paths were of equal length. Results showed that participants not only minimized individual costs but also collective costs when performing in dyads, although to a smaller extent (90.8% vs. 82.9% of trials in congruent conditions; 93.1% vs. 73.8% of trials in incongruent conditions). For the object-transfer task, this suggests that people consider shared goals and act coefficiently in a real-life context.