It a loss for all German military branches as one of the key reasons for the postponement and later cancellation of Sea Lion was the fact that there was hardly any coordination between the various military branches.
ack-ack
To a very large extent... this was true. I still say, and this is not entirely the fault of the two; that resources were pulled and action stopped before an ultimate victory was assured. Blitzkrieg failed before Russia was ever invaded when the Reich came up against the channel. They should have pressed the attack there and let Russia stew. In both instances they failed as Generals and cowed to Der Furher pulling resources from the blockade on the Naval side, and giving preference to civilian over Military targets on the Air side.
The failure of German Generals throughout the war was one of servitude to Hitler, rather than achieving ultimate victory. Doenitz and Goering in the BoB are prime examples of this systemic failure.