Hay on Wye to Talgarth Walk 10th May Time Changes

For walkers coming from the Crickhowell direction , the A479 will be closed at Tretower. There will be a diversion. I tried continuing on A40 to Bwlch . There take the B4560 to Llangors and continue to Talgarth. This only took about 5” longer.
The bus time has changed and we must leave Talgarth car park  by 9.10. at the latest.