This holds irrespective of the number of water layers and ordering of the GO sheets. Besides H-bonding to a single GO layer, H-bonded bridges connecting the two layers have been identified for all models. Their number is larger for random GO sheets and in that case also decreases with increasing interlayer separation. Both types of HBs, i.e. GO-water and GO-water-GO, cause a temporary trapping of water molecules. However, in particular the bridges are part of the H-bonded intra-water network. Hence there is a competition between intra-water liberating forces and GO trapping, which was identified as a mechanism behind the slow down of the diffusion. This introduces a new aspect into the discussion of the effect of GO layers on water diffusion. In addition, it is believed to be crucial knowledge for the development of novel applications based on GO membranes. For instance, understanding the conditions that promote HBs bridges and the mechanism by which they affect the diffusion of liquids at the solid-liquid interface will be important for designing separation membranes that benefit from such case scenario (i.e., membranes allow some species to move freely, while holding/delaying the other species). In future work, it will be interesting to explore even larger systems such as to approach the bulk-like limit and to connect to experimental data on diffusion of molecular species.