didn't notice you :-) To be fair he said he was focussing on avoiding pot-holes and gravel...
I had glasses on that are designed to render anyone completely unrecognisable. He was almost past me before I recognised him and my shout was probably lost in the wind. It was close to the top of Corsedardar. I too was focussed on those things but at that time not as much as going up the FoB road.
E went up Cairn and said it was dreadful with gravel... then he did Forest of Birse and punctured coming back down :-( Still he's a dab hand at repairing tyres now.