Post not showing up in my feed

My blog is https://www.barryjogorman.com

My feed is https://www.barryjogorman.com/feed

When I review the feed seems the latest post is not included.

Latest post is: https://barryjogorman.com/blog/eu-and-us-continue-to-have-different-perspectives-on-google/

Previous post is: https://barryjogorman.com/blog/fathers-and-sons-turgenev/

When I review https://www.barryjogorman.com/feed first item listed is ‘fathers-and-sons-turgenev/’

Is there some delay in feed including latest posts? Is there a bug?