If not all second stage engines light, but reliable sources indicate that enough engines lit to perform the test objective (regardless of if that objective ultimately fails for other reasons) this will still resolve YES

Apr 20, 10:58am: On the next full stack launch of starship (after 4/20), conditional on stage separation, will second stage engines light → On the next full stack launch of starship (after 4/20) with nominal stage separation, will second stage engines light