<p>I would not interfere. If you think the older relative needs more visitors/face time with family, then step up and be that visitor yourself. I have done this with an elderly aunt. I occasionally chat with her son (my cousin), and bite my tongue, as I think it is shameful how infrequently he sees his mom. I think his wife has an issue with the aunt, so that is why, but the aunt is now sliding into dementia (and I might add really never was an unpleasant person). But I do not know the details of it, nor do I think a request from me would improve the situation. I do always mention to him that I have seen his mom and how she is doing.</p>