~NOTE: By Co-inherence I also intend to include substitution and exchange - Williams distinctive triad of concerns.
I think there are implications in co-inherence for how salvation works - that it is an offer which will be made to all, to the soul (which is always mature and able to make this choice, even in babies) and accepted or refused, and the prayers and other helps of others (their Love) may be effectual in making this choice the choice for salvation. The opposite choice, Williams called 'the exclusion of Love' - the worst a human can experience: worse than death, he said.
And, I sense an extrapolation to understand the meaning of life, the extended life, the life into adulthood which so few humans (a small proportion) experienced in history. Life may not be a test for the individual soul, a kind of obstacle course with salvation as the goal or the world as a gymnasium of The Good - but perhaps advanced age was intended for the Love of others: in brief to allow more time to pray for others. Thus life could (potentially) benefit the whole of mankind, the more life - potentially - the greater benefit to the co-inherent web.