"knock-on impact" is a correct and usable phrase in written English.
You can use it to refer to a secondary effect that results from a primary event. For example, "The pandemic has had a knock-on impact on the global economy."
Draghi said it was important that Europe worked together to turn the challenge of coping with refugees into an opportunity and said one knock-on impact would be higher public spending.
Improve a woman's life and the knock-on impact is astonishing.
It is an inescapable truth that reduced funding for social care has had a knock-on impact on NHS services.
Once the jobs are gone the knock-on impact will be felt throughout the supply chain and the local economy.
The knock-on impact has left a generation of Britons learning a new language, from "muggle" to "horcrux".
And as with so many other forms of low-level sexism, the knock-on impact is enormous.
Participation in activities makes a massive difference to an older person's sense of well-being and that in turn can have a positive effect on loneliness, which we know has a knock on impact on mental and physical health".
That then has a knock on impact on funding newsrooms and quality journalism.
Which would then have a knock on impact on AI performance.
Any substantial increase in health spending is going to to have serious knock on impact elsewhere - and it's local government which is bracing itself for Tuesday's announcement.
But if incorrect (or late) earnings data is passed there's a knock on impact on the payout — with Alston saying government has chosen to give the automated system the "benefit of the doubt" over and above the claimant.
