Thanks for the review, truly appreciated!
That site is using two templates, cMap on the top to create a “Featured” entries section. They used the shortcode option to disable featured such as search, pagination and the category select. The entry list was limited by using the id shortcode option.
Turn show the “non-featured” entries, they used added a second Connections shortcode using the template shortcode option to use the Single Entry Card template limiting the list with the category shortcode option.
Take a look at his original post, he show the shortcode he is using on the page.
Hope that helps!