Marriage ARC, has anyone ever had a home visit from NIA?

I got these links in haste, so (1) I’m not sure if everything in these threads has to do with marriage, (2) I’m not sure if everything in them involves the NIA, and (3) the information below probably isn’t very helpful in giving an idea of how frequent or how likely these kinds of visits are, but (4) anyway:

I think this thread just involves answering some kind of questionnaire: