Language test results are valid for Express Entry purposes for a fixed window, and it's easy to get confused about which date starts the clock, especially if you later requested a re-evaluation of your results.
What group members confirmed: the expiry date is calculated from the date you took the exam, not the date you received your results and not the date of any re-evaluation. So if you sat the test on 29 November 2020, your result is valid until 29 November 2022 for Express Entry purposes — regardless of when your official results came through or were revised.
This matters when timing your profile creation, ITA response, and any AOR deadline against your test's validity window — use your exam date as the anchor, not your results date.