I found this chamber fairly easy, mayhaps cause i'm very familiar with this mechanic. Nicely made though, thumbs'd up!

"though you might be spending some time on it if you do not know what to do".
That is true. Fortunately I have experienced this portal mechanic before, but I still love it. Even if you've done it before, in every chamber it still makes you pause and think for a moment. Thank you for that and your hard work. I do hope you'll give my two newest chambers a play.