https://www.facebook.com/photo/?fbid=6727596803970936&set=gm.697086888952993&idorvanity=227079345953752 😄
I agree that it IS a plothole. No-one can just say that Chekov was on the Enterprise and wasn't seen, as that doesn't work neither.
I feel this image is now considered canon
No, it's not, it's a lame photoshop.
Khan never said he met Chekov, just than he never forgets a face. Khan looked through all the ship's company personal files, he saw Chekov's face.