Having 4 sets of fins is almost unheard of, especially I this layout. Makes me wonder if there indeed is a gap but one that is hidden due to some optic illusion. If so, then we might be looking at two regular missiles. Or that were looking at missile with a booster. Not that it makes sense but then again a missile with four sets of fins doesn't make sense either.
Unless it's some kind of loitering esm / jammer flying vehicle and some of those fins are in fact antennas. Interesting times indeed.
Must be a funny coincidence due to the angle that we don't see the gap between both missiles, which in fact is not that small.