Slim-To-None, Eh?
These two men, as most do, appear to be clueless. They do not even seem to have realized that they are sitting mere inches away from their doppelgänger. The photographer in this instance is aware of this having happened, hence having snapped the photo.
How long, if at all, do you think it took these two to realize they were in fact, so similar in look? Knowing guys, it could have taken much longer than it should have, based on the fact that these two also seem quite oblivious to most things going on around them. Thankfully there was an observant citizen who captured the moment.