Can I create a board that is continually filled with cards and tasks from 2 separate boards?

[VA1]

I have 2 different boards for two different projects - I want to create a third board that gives an overview of the 2 separate boards in one space (or one board). I don't want to fully merge the boards as I want the 3rd board to continuously be updated from entries into the 2 separate boards. I.e. - if a task moves from an 'in progress' card to a 'done' card, I want those changes to reflect in the 3rd overall board/

[Josh_Unito]

@VA1 - Yes! Absolutely! Here's a guide to syncing cards between Trello boards with Unito's Board Sync Power-Up. It does exactly what you're describing - you can set rules to filter in/out specific cards from syncing to multiple other boards. 

[Dexter de Vera]

You may create new custom filter to filter both project. Then use that filter to the 3rd board to see both project tickets. And make sure user have access to both projecy so they can see all tickets.

Ex.

Project in ("project A", " project B") ORDER BY DESC