An Bord Pleanála missing important deadlines - why?

I’ve seen a lot of instances lately where An Bord Pleanála is missing deadlines, some multiple times

4 deadlines and counting missed for the M21 - Limerick to Rathkeale/Foynes
https://theworldnews.net/ie-news/decision-on-new-limerick-to-foynes-road-delayed-again

Any ideas why? SHDs must be taking up a lot of their time. I’m assuming it is lack of staff

NWFH. At all.