First, closure tells us that our brains seek out a connection, regardless of whether the elements touch. So we read all these images as one, in part due to their proximity as well. Both closure and proximity are virtually inevitable due to my snapshots up being lined up in this row/column structure (something to be aware of if you choose differently).
However, you will find that various potential arrangements within this structure will provide equally varying levels of compositional success. What you should aim for is a good sense of continuity, so that proximate images almost “talk” to one another as the eye flows from one area to the next. Again, have a look at my visualization of exactly this, below.
Overall, experimenting with the order of your snapshots within a grouping structure can lead to a really satisfying visual impact.