There is a problem with the relationship between the repeater and the piston

I think the results of the former and the latter should be the same in the video. It is difficult to explain in writing, but I would appreciate it if you watched the video.

The result I'm talking about is that the concrete sand block is successfully moved up by the piston.

https://drive.google.com/file/d/1NyjM9xV0WP92zpPGFVL1-v-iSRkRbQcu/view?usp=sharing

If you download the video, you can see it in the original quality.
Have a good day!