[quote=@Kho]
So, I've realised that for the population of [New] Chronos to grow from 74 to ~82,000 over billions of years... it would have to be abominably slow. The growth rate would have to be something like 0.[lotsa zeroes]1%

I guess they're just not into making babies. Or something
[/quote]

Do aging and/or gestation periods for new babies stay on the timescale of the world outside new Chronos? Maybe they just have multi-millenium long pregnancies.