They stopped the relief well so that IF the cap cause a blow back it does not damage the relief well. They are close enough to the first well (a few feet) that if there was a rupture and the relief well was any closer they would basically be starting over.
Stopping the relief well makes sense. In fact, double checking for a potential fissure makes sense to some extent.
Just as long as they don’t get paralyzed by analysis.
Sorry are you oilfield? That makes no sense. How would the failure of the cap effect the relief well at 13,000', and if somehow it did why could you not pump a cement plug and re drill the last few feet?