When one analyzes Saṅkhāras, where does 'unconditioned' fit in? When one analyzes Saṅkhāras, where does 'unconditioned' fit in?

The word means 'formations'[1] or 'that which has been put together'
and 'that which puts together'.

I take this to mean something about parts and wholes, as well as causation. But what about &quot;the unconditioned&quot;: will it appear as cognitive residue or by-product of establishing every conditioned thing, or is it an object of cognition one gets to? Or what exactly?
Formation is okay, back two other meaning are not okay.
Sankhara are coworker originators.
Sankhata are lucky men or victims.
Every aggregates must be many cause states (conditioners) and many effect states (conditioned).
There are only two unconditioned, Nibbāna and Illusion (Paññatti, included name).
Nibbāna, a reality, is not conditioned by any Sankhara because it is  the cessation state of Sankhara. It is the opposite of conditioned. Whoever , aggregates, knew Nibbāna must going to never born by conditioners again in 7 births. It is never arise but it is still a state either one know it or not. And  who want to know this reality must practice hard follow the Buddha only, except SammāSambuddha and PaccekaSambuddha.
Illusion (Paññatti, included name) is not conditioned because it is just imagination which must  imagined by  someone. It is not reality, not truth. And it is not the opposite of aggregates because erything, all aggregates, Nibbāna and all Illusions, can be imagined by thinking (mind;Cittu-Uppāda).
See Abhidhamma, especially Patthāna (24 conditions), for more information.