Who knows what exactly happened. It is all a guess. But given the 70 years, a couple of years more or less is in the target area and within the realm of possibility making wt interpretation plausible. Won’t know for sure until it hits you from above. Everything considered, wt interpretation based on 70 years ( FDS appointed circa 1919) has not been been debunked, ( if one is looking for relevancy of this subtopic ). We know that the FDS is not Judaism or Islam or other religions, it needs to be Christianity and since the churches of christendom failed to stop JW as hard as they tried, that eliminates christendom. 7x, 1914,1919, appointment of fds depends on 70 so that proves relevance.
I'm trying to find common ground with "scholar" on a lower bound for the round trip. Upper bound, who knows...