Can carburetors be combined with TBI?

After some though this is how I would do it:

Setup the center TBI normal with O2s and a regular driving table.

Adjust the throttle position sensor to align with then the other two carbs just begin to move. In the table change the fueling mode from closed loop to open loop and set the center TBI to ramp based on MAP only. Adjust the outboard carb jets using your O2 at WOT in the range you want. This could work if you have a bit of time and patience.

I am assuming you are using the 2barrel carbs specifically designed for the 6 pack. You can’t use just any old carb there or it will be a mess.