AVC - how does tax benefit work in same year that start a new job?

Imagining that you start a new job at the end of the year in a company with a new pension plan and that you are in your 40s.
Does your tax benefit for your contribution apply separately for the 2 jobs you had that year?
For example, if you earn 40K in the first job, you can contribute personally 10K in the first pension plan.
And if you earn 40K in the second job, 10K in the second pension plan.
Or, can your total contribution for the year be of 20K in the second pension plan?

Reading the documents I have on my own pension, it seems to be the first scenario but perhaps someone can confirm?