Had the pleasure of meeting him and hearing him address small audiences in the last few years. A treat when someone asked him 'Why did the Luftwaffe not build four-engine heavy bombers as the RAF did?'. His reply began 'ah yes, I asked Goering that...'.
Amazing to have such ready access to such meaningful history. While I share, personally, the concern that he may not have been offered a K, I am aware that he may have been, and may have turned it down.
Either way, his achievements transcend any letters which might have been placed behind his name.