Duh!....How profound. What about cam, lifters, rocker arms, push
rods,wrist pin, ? How do they get lubricated?

pressue oil.

timing gears,accessory case gears and accessories? How do they get
lubricated?

the bottom gear runs in the sump, so drags oil around with it

What about vacuum pump, etc.? How do they get lubricated?

never saw a vacuum pump mounted in the sump.

btw, gene, it is now obvious you don't have a clew what kind of surfaces
require pressure oil and what kinds don't. Obviously, you have no idea how an
engine actually runs.

I have never seen