You are referring to Dale and Kaila (Kayla?) Halling?

Ah yes. KH was a frequent contributor with many sensible comments.
DH was not here so often but put up a few presentations which were very relevant and good. I did not save them but remember his outline of economics- we have all learnt that economics primarily is about the allocation of scarce resources, DH says:
No, the prime purpose of economics is How to get more.

They went off to Dominica I think.
D and K Halling- if reading this, come back to the Gulch.

I had several interesting discussions with KHalling back in the days when they were around. I miss their contributions to the site.

As I recall they stopped posting not long after Trump was elected, noting that this site had become more about current politics than Objectivism.