Its turn one , Japan wants to combat move its fleet at sz 33 thru sz 34,sz 35, to sz 43 to invade Borneo. Can Japan pass thru sz 35 which contains an American fleet since Japan and the US are not at war?
The US is amphibious assaulting Korea and can the planes in japan scramble to kill the transports in the seazone. The are no jap ships in the sea zone.
The scrambling fighters will defend the seazone, not the territory.
I think if your ship ends up in an enemy convoy zone and survives to their collect income phase it automatically deducts from their total, so that being said I believe you can attack to an enemy sea zone assuming you kill something or noncombat to one. The convoy raiding takes place on the opponents collect income phase so its entirely different from your combat.