Some crossed lines here. Reading through the recent posts it sounds like there was light to the ONT, hence the flashing PON, but that the light was connected to the wrong SASA in the splitter node.
Because ‘it wasn’t tagged’ in the splitter, the engineer couldn’t ID the correct fibre from Tim’s place , so as to be able to splice it onto the correct SASA as per routing.
The reference to a circuit down the road suggests ID’ing a working circuit on the correct SASA, and using this to prove where Tim’s fibre actually was.
A right malarkey ….sounds like this last Openreach bod on site was pretty clued up. (Apart from dissing the copper, he could just have asked, would have saved a bit of grief)
54-46 was my number