Sanity check RE O2 Sensor

Hi all, I’m getting an open circuit fault for my Bank 2 S2 (Rear passenger AUS RHD market RS4) so purchased what I thought was the correct O2 sensor from JHM (https://jhmotorsports.com/shop/catalog/o2-oxygen-sensor-oem-rear-driver-side-bank-for-b7-rs4-p-1474.html).

I’ve just got around to having the mechanic fit it, and he’s said that the plug is totally different, and the harness on the O2 sensor I was sent was way longer than it needed to be. I double-checked that I ordered the right part, and the one I ordered definitely looks different to what they sent.

Dru from JHM is adamant that the sensor is correct. Can you guys confirm whether I’m going insane or not? Here is a Pic of what I received: https://goo.gl/photos/kBv6BoLKPb6GL3C69

Thanks guys.