O2 sensor depth (in bung)

Ok so my O2 sensor is about 2mm shy of being fully inside the y-pipe. I can tell this because I see where it stops on the threads. There's about 2mm of threads left where the O2 sensor tightens against the bung before it threads all the way in. In other words, the actual tip/probe is 2mm or so recessed inside the bung (in the y-pipe).

Do you think this will affect its reading?