When should Germany have surrendered?

[Grumbler]

"ROTFLMBO and you think that the same 109s that didn't have the range to properly fight over the UK during the BoB would suddenly have the necessary range to protect ground troops? Yeah, right."

NOT what I said. The 109 didn't have the range to provide air cover for bombers over London. They DID have the range to provide air cover over the bombers that shut down the English Channel to English ships in August of 1940. It took 5 minutes for the germans to cross the channel and attack ships using it. It took 15 minutes for the RAF to get enough altitude to intercept them. Do the math. Dowding told the War Cabinet that it was a waste of aircraft, and worse the pilots to figth the Luftwaffe over the channel. He was correct. It was nevy the airplanes that worried the brts, it was the pilots. A pilot shot down over England could be back in the air a few hours later, if needed, one shot down over the channel was probably dead, since the English had no trained rescue service like the germans did.

And I have more clues then you can deal with, which is why you are not being very rational on this subject. The Germans didn't do Sealion because they couldn't get the 10 Divisions they wanted. My reasoning is that they didn't NEED 10 divisions. 2 regiments would have been enough to grab a port and get it working. You land the prars, grab an airfield and go from there. The Germans were man to man worth about 10 brits in 1940. So landing 3,000 paras would have been more then enough to grab a foothold.
The Germans weren't interested in Invading England, since they figured you guys would surrender and if you didn't, so What? It was just not possible for England to beat Germany on it's own. You didn't have the men or resources.
Another thing you are overlooking is the difference in supply requirements. Germans needed about 25% of what the Allies considered normal. All that would have been needed was ammo. Food and medical supplies would have been captured.
It would not have been easy, but it would have been possible.