Yeah, looked like a near miss and they went for cover. Might have been some spall from a hit off the structure to the right.
Long range harassment fire.
On thinking of it, the whole article doesn’t make sense. The video leads you to believe that it is the ‘scoped’ perspective but it just doesn’t look like it. And, with both dropping at the same time more explanation is needed. To get both with one shot, the bullet would have to have been coming from the left so I’m still thinking it was a miss and both dropped because of something other than one (or both) getting hit.