there can be malfunctions or unlucky coincidences, say your hypersonic happens to go riiight above an aa launcher by chance, which increases the chance of an intercept significantly, making it easier for the missile to reach that altitude in time. hypersonics truly are only impossible to intercept when they are maneuverable, and actually use that ability, like a mirv platform does it. if it goes in a straight line it's not hard to fire a missile into its path timed correctly to intercept it. if it changes course sporadically however, 0 chance. and the same is true for terminal intercept when the missile is diving for your face. if you have a really fast missile, radar, computer etc you might be able to shoot onto into its face instead, but this has very limited range, in effect when the aa system itself is the target, or in the immediate vicinity. and again: if it manuevers in the temrinal phase intercept chance is near 0.
Germany