Seriously though. How may engines have you seen that don’t draw all intake air from the same plenum?
Hilborn mechanical injection with 8 stacks is one.
How about those 1970’s British Cars, what did they have?
1950’s 6 carb setups had balance tubes.

I have a Long Ram car and have driven it 22K miles. You can purposely mis adjust the carb openings and it still runs And drives. Of course it runs way better with the carbs synced. I can’t see it working worth a darn without the balance tube. Chrysler called it a “balance tube” for a good reason.