What should I use in this situation?

[Johnny]

There are two objectives, I want to say that they're working on each other, say interactive, not ( ). I want to use a word to mention that it's not like a one-way street, only A works on B, or B works on A.

What could be the best word?
Meaning Not( )=interactive.

Thanks
Johnny

[David L.]

I think you would be better posting the passage in which you wish to include this word.
I can't grasp how two objectives could interact. They might compete for time, resources etc

or, briefly, what are the objectives, and what is the nature of this 'selective interaction'?

[Johnny]

I would probably say, teaching and learning are interactive. they work on each other, not (). What should I use here. It looks that Not() will be the opposite of interactive.

[anreak]

it's not a one-way process...what about?