But then the resolution can't have been that high, or the other satellite would have been as big as the ISS. It must have been a lot closer than earth.
They've got 0.3m on World View 3, more than enough for what was shown in the gif
Edit: you're probably right, actually.. the silver square on the lower section of landsat 8 is ~1.5m high (guessing from the image on wikipedia), so there should only be ~5-6 pixels for it, but there are clearly more.
