Shenzhou = flashback??

[Ensign Ogahd Ahmganadai]

Are you sure? To me it looks like this Klingon green glowy thing is zapping past what could be the Discovery and ending up hitting what looks like the Shenzhou:

That actually does look like the Shenzhou to me. http://ncc-1031.com/starships/star-trek-discovery-uss-shenzhou-ncc-1227/

 

[Tuskin38]

I was thinking of a different shot.

There is another shot of a ship that looks similar to the Shenzhou but with some differences, like the nacelles.