Why better Axis long-range air support matters more than perfect shells

Better coordination of air reconnaissance and naval operations is judged more consequential than correcting Italian shell quality alone, with fuel and British countermeasures still affecting the result.

Question

Which would change Axis fortunes more: better Italian shells or stronger Luftwaffe support for long-range naval patrols?

Short answer

Better integration of long-range air power would matter more, because reconnaissance and air cover constrained how effectively the Italian fleet could operate.

Notes

Italian shell-quality problems are treated as several cumulative shortcomings whose importance can be exaggerated. Early straddles at extreme range demonstrate good fire control, but turning those straddles into hits remained difficult. Better integration of reconnaissance and air cover with naval operations is judged more consequential than fixing shell quality alone. Fuel shortages remain a separate constraint. A stronger German long-range aircraft effort would probably bring an earlier British escort-carrier response, while historically the slow supply of Condors limited the pressure.