The reference to “double the distance” could mean anything at the point, but my mind keeps making me think of TAR 10, leg 9, where there was no mat and no Phil at the halfway point, just a clue box outside of Helsinki Olympic Stadium. I’m able to visualize it in my mind without having gone back to watch. Same thing for TAR 9 in Moscow near Red Square, but Phil was there without a mat. But I do think the TAR 10 leg format is the closest fit.