It takes some time for chunks to be putted into complex block, like silo or dropper, so conveyor line suspends and filter allows chunks to be passed.
Video - https://drive.google.com/file/d/1HQHGxM-95n4yMn0JwPCnCFttoU8c0b9Z/view
- Place two same parallel conveyor lines.
- Add a scraper to the start of each conveyor.
- Add a silo to the end of each conveyor.
- Connect filter to the center of each conveyor which will extract everything from the conveyor.
- Connect first filter directly to the new silo, connect second to the new silo through 1 conveyor block.
- Put the same amount of the blocks to each scrapper.
- Second filter will allow chunks to pass it sometimes.

Video - https://drive.google.com/file/d/1HQHGxM-95n4yMn0JwPCnCFttoU8c0b9Z/view