Romans 8:16-17, The Spirit himself confirms to our spirit that we are children of God, and if children, also heirs—heirs of God and fellow heirs with Christ, if indeed we suffer together with him so that we may also be glorified together with him. (LEB)
The NLT has this written more like a category logic, rather than how the LEB states in more in propositional format. However, the things being said are better stated as necessary category realities, rather than necessary “connections,” as in propositional logic. This is like the difference between metaphysics vs ontology; both indirectly imply other, but they are not the same thing.
This is another chain syllogism, like the one Paul makes a few verses later in 29-30.
This gives us a glimpse in the mind of God; into His goodness and boundless unmeritable favor given to His elect Children. What sort of inheritance does Jesus Christ get? Well, we get it to.
This also illustrates how truth claims cannot be observed but only revealed, so that category fallacies are not made. If one has a premise, “I am led by the Spirit of God,” and we know this is a positive thing, yet there is no way to conclude/infer into the category of “heirs with Christ” without being invalid and making fallacies. Thanks be to God, He has revealed such precious knowledge to us, so that we can make deductions and apply ourselves to them in hope; and we know Christian hope does not disappoint. This inheritance now include all sorts of things, even miracles (healings, resurrections, prosperity) and the power of God’s Spirit (Galatians 3:2-7).
All [those with the Spirits testimony] are [children of God].
All [children of God] are [heirs of God].
All [heirs of God] are [heirs with Christ].
Thus, all [those with the Spirit’s testimony] are [heirs with Christ].