/(&7 6$0c /( &7 In order to deepen insight into the dynamics, we show selected characteristics along single trajectories in Figure , for SAM 5.5 Å (left column) and SAM 3.5 Å (right column). The selected characteristics are F XX matrix elements, F H/H-1/L+1/L values, IPR, CT, and the active electronic state. The areas shaded in grey correspond to being in one of the nπ * states. For SAM 5.5 Å, for the shown trajectory, the exciton rapidly localizes at the third monomer (X = 3). Subsequently, the exciton remains mostly localized experiencing sometimes transient delocalization and exciton transfer from one monomer to another, while being in the ππ * manifold. The transient delocalization can be clearly deduced from the second row, for times at which F H is not close to 1. The single-trajectory IPR (third row) also shows a rapid relaxation to ∼1 but with spikes at times corresponding to the transient delocalization. We note that CT is virtually zero in this case (the fourth row). The transient delocalization and the exciton transfer are sometimes but not always accompanied by nonadiabatic transitions (surface hops) between adiabatic states (compare the three upper rows with the lower row, which shows the active electronic, adiabatic state). For example, the period of relatively lengthy transient delocalization between 720 and 910 fs comes together with the population of higher lying excited states (which are above S 5 ). Notably, after transition to the nπ * manifold, the exciton is strongly localized (F 22 = 1, F H = 1, IPR = 1; FTDM and IPR curves are less noisy than for the ππ * manifold) and it remains at a single fragment (X = 2 for the shown trajectory) without being transferred. This is in agreement with the recent conclusion of Sangiogo Gil et al. Importantly, the absence of the exciton transfer in the nπ * manifold is observed for almost all trajectories with an exception of two trajectories for tetramer 3.5 Å and two trajectories for SAM 3.5 Å. And for these exceptional trajectories, only a single transfer event takes place per trajectory.