Here we see (most likely) a couple walking together. We can see that they are moving together: the movement of their legs are synchronized: both of their left legs are in the front, their rights legs are in the back, indicating the (natural) attempt of staying close with the person next to you.
Their arms also indicate this; in fact, their whole bodies! The facial expression (smiling), their upper torso... This sameness is even seen in the way that they have chosen to clothe (which in fact might be the result of them sharing a similar habitus): both have white sneakers and the colors of their shirts/dress is blue.
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