Yeah, that’s not what I hoped and that means pagination is not possible then. And it requires overly complicated and inefficient loops, where a simple post query sorted by date would be sufficient.
I hope this shortcoming of Bricks query loops is adressed in an upcoming release. As it impedes so many possibilities that Bricks loop could be used for without the following restriction.
Suggestion
A loop element which outputs no HTML itself, just the elements placed inside. Then I’d place the card and a heading in that wrapper and conditionally enable the month divider heading.
In addition a code element which supports nesting of elements e.g. by placing a {nested_elements} tag in your PHP/HTML code and adding children items would fully satisfy the requirement for this.
These two things would simplify life with Bricks loops and loosen the chains it currently has. There are endless possibilities like dynamically inserting a static card at position 5 without CSS tricks, or following a specific post, which currently requires Javascript. Additionally complicated query loops can get much simpler, as in my example. This also reduces the need for some query options as simpler queries allow you to achieve more and as it should be - see my example which shrinks down to a single loop.