Not a couple of yards surely, just watched and it was closer than I'd expected, may or may not have been about on the line at edge of box by the time he clipped him, hard to say. OTOH the defender clearly was the last man, which was what we were debating at the time in the ground, the other gut racing back wasn't level with him and Thibaut yet. Maybe the ref (who by and large was about the best we've had so far) was thinking it was close for the pen or a free kick, and didn't want to send off/book a man who might be shown not to have been in the box when he watched it later!