The easiest way to get some perspective on this is to note that the clouds never get any closer, even when the jet is heading directly for them at 240 kts.
It’s difficult to wrap my head around. There’s are very narrow field of view (0.75°). The object and the jet are both moving, and probably not in straight lines
Starting at frame 0 the clouds take 67 frames, or 2.23 seconds to cross the field of view, it’s at a bit of an angle so that about 0.75° in 2 seconds ... Read even more