That was one of my takeaways too, that they clearly state the 60 hole infill drilling will be completed 'after' resource upgrade and DFS. The timing is just off whichever way you look at it, as the results of this would directly effect the resource upgrade and DFS. I am guessing they want to keep to the DFS release timeline when really these holes should be included and started a few Months earlier. Or DFS delayed to incorporate them, but no one wants that. I think it is exactly like you said, they had focus on exploration and perhaps this was at the expense of the full due diligence at T3.... And simply started this infill drilling too late to match the DFS timeline.
Otherwise, learning from the results that earlyish open pit has good veining/grades continues to make the stand alone T3 project more appealing. And considering that is all we are being valued on at the moment in my opinion, great news.