Do you know anybody else who had 2 generations like that? It used to be more common but even back in 1970 the average was above 21. These days it’s above 27.

northwell.edu/…/geriatric-pregnancy-increases-com…

With every average there will be people above and below the average age. And since there are some people having their first child in their 40s, the median is actually probably below the average.

I found it more suspicious that both times the father was supposedly aged at the suspiciously round number of 20.