The Battle of Britain Was The First Defeat For The German Luftwaffe.

[ATAG_Snapper]

I don't believe at the airmen level it was seen so much as a "defeat", but more as a change of orders. All attention was next focussed upon Operation Barbarossa, so the significance of what had occurred, ie losing the Battle of Britain, didn't play such a huge part in the eyes of the German fliers that were gearing up for a much larger battle ahead.

That's my take - I could be wrong.