OH…. Looking at the second photo reveals that I misunderstood the problem! The hose shown is correct, and it is the angle of the spigot on the bottom of the radiator that seems to be at the wrong angle for a fairly straight connection. Also I was thinking in terms of the blind head barrels on my vintage (pre-1930) bikes !!
I can only suggest trying to use a flexible silicone rubber piece of hose, as already suggested, failing that try and get the rad tilted a bit more to try and get the connections to line up a bit better. Sorry I initially misunderstood the situation.