The problem with Arri marketing the sensor as 2 XT open gate sensors tuned on their side is that it is incorrect and makes people believe the wrong thing. They are trying to say that there is a single stitch line through the center of the sensor. If it was two sensors, they would not be able to get them close enough to make a single sensor. Also the LF sensor is 36.7mm x 25.54mm. If it was 2-XT sensors it would be 36.26mm x 28.17mm. It is not two sensors, but a stitched sensor, just like ALL other large format sensors. The big question is how they are dealing with the stitch. Alexa65 deals with the stitch in the Vault65 because they couldn't do all the image processing in camera. Did they fix that?