Hi Shooter..!...I am not Dan San..
...not even Gunnar San...
However if we talk about avarage time(could vary a lot because of several reasons..) I would say that in 1916
it took about 1,5 month.
the German were by some reason able to speed up the process, so say 3 weeks...
it took in general 1 month(probably due the increasing amount of claims). But from Aug 1918 until "the" end the avarage time again increased mostly depending on the "chaotic" War situation. So from Aug 1918 and forwards it probably took about 1,5 month...!
In late 1918 with a very high amount of claims, lead to that more so called contested/disputed* and unsure claims were recorded to clear up.
I would estimate that Kogenluft in early Dec 1918 had around 150 of this category* to clear up.
It seems rather certain that Kogenluft closed the books in Feb 1919...