Possible to embed Squarespace content TO an external site?

Is it possible to embed a summary block TO an external website? There is lots of advice on accomplishing the opposite, but that's not what we're trying to accomplish. Here's some context:

We use our Squarespace website to showcase new incoming merchandise for a thrift store we operate. We do this via Squarespace instead of our official web page because of how easy it makes this process. We have the Squarespace app installed on a tablet in our receiving area which allows staff members of any technology skill level to easily post photos. The process to post on our official web page would be too complicated for this to otherwise be possible. We then have a summary block pulling the uploaded gallery photos to an inventory page so customers can view the incoming items.

The problem is we'd like to capture the traffic we already naturally generate to our official web site. Is there a way to embed the summary block FROM our Squarespace site TO our official web page, which is hosted through a different service? Ideally this would create the illusion of a seamless experience rather than risk confusing our customers with two different domains.

I would also add if there isn't a way to do this natively through Squarespace is anyone aware of a third party tool that would accomplish this?

Any help is much appreciated!