True but we've got to factor in the OP here and his "OH JAH HITLER SENPAI!" 'release' which has made the Allies be almost uniformly retarded whilst the Germans are producing beyond the means of their econimy to work by the magic of NaziCoal which somehow solves all the issues.
The simple thing is that this would not be spotted in 39, unless the WAllies were full on window licking spastics and that Canaris had somehow had a change of heart and mind and was the most ferverent Nazi EVER. Like, more Nazi than a dozen Hitlers condesed into one. Considering how leaky the German 'intelligence' agency was in OTL this would need to be completely overhauled and made not full of nazi/hitler haters who were actively collaborating with the British.
This would be spotted earlier by anyone competent. But going off the OP's "On der Furhers face" wank, the British are spinless retards, the French are seemingly literally this
Just add a ring of garlic and a black/dark blue bicycle and we'd be golden.
Zuit allore'ing all over the place without doing anything but cowering behind the Maginot line whilst Hitler openly builds up his armed forces and breaks EVERY treaty there is and the Anglo-French and everyone are like;
"Daawwww Mr Hitler, you're just a nice friendly man ain't you. We trust you utterly, and take your word for everything because you're a good, honest person."
If this gets spotted in 1939 in your TL OP, then its too late, Sealion IS going ahead, the RN will conduct a mass scuttling the day the war breaks out and Ovaron will smile down upon you, see your works and judge it to be good. But this thread is probably just you gathering information which you can then cherry pick your data from as you do in your main post so you can somehow make Sealion work, so crack on, what ever gets said here that is in any negative light will just be ignored or turned into 'Oh so it CAN work because of
*insert massively extenuating circumstances that you've got as close to absolute zero chance of happening in real life but will happen in your TL Here*.
Basically the problem with your TL is that you've got the Nazi's pulling steel out of their arses and sodomizing absolutely every treaty (as well what happened in Spain) and developing and advancing with foresight that indicates that they've got Wikipedia as well as a huge amount of technical data somehow.
But they are operating in some kind of magical wank-bubble, where they do all this AMAZING (and terrifying) stuff, but outside the bubble, the rest of the world plods along as per OTL and basically does NOTHING different and reacts exactly the same way when they simply would not. Its no wonder that people are not taking your TL seriously, despite the amount of work you're putting into it, its just a wank that's trying to pass itself off as something very serious. You can dress a dog up in a lab coat but that does not make it a scientist. You can dress this wank of yours up as something serious, but that don't mean it is.