There is every possibility that there are different ships of the same design.
In Star Wars Vader comes from a Star Destroyer. When he sees the escape vehicle go off he is not on a Star Destroyer.
Vader does not know for sure they have the plans. I think the clear implication in Rogue One is that he stands there pensively knowing that he cannot immediately capture that vessel.
The several transmissions may not have been the plans. The plans were sent in ONE transmission. The several transmissions may have mentioned the plans, hence Vader's confidence Leia had them in episode 4.
Vader is on the 1/2 destroyed rebel ship when he sees the escaping vehicle, but it seemed blatantly obvious to me that the star destroyer had docked / somehow overcome energy shields to get all the storm troopers /etc aboard in the first place.
Wouldnt be that hard to jettison the ruined rebel ship to chase after the blockade runner Leia is now in.
I was also under the impression that Vader knows from earlier in Rogue One that they have lost the plans / they have already been transmitted. I think you see a shot of him being told while on a star destroyer that the signal got through to the rebels.
While Vader does say "plans were beamed aboard THIS ship" I think thats taking it a little too literally. Also just thinking about it normally - at the point the transmission is made the blockade runner from a New Hope is docked with the rebel flag ship - does it really matter whether its the flag ship or the blockade runner that recieved the transmission? Vader wouldnt know (wouldnt really care) which ship actually recieved the information, as he has already seen one of them destroyed.
To me that section runs in nicely to start of ANH, and is within 10-20 minutes of the start - there is no similar ship etc etc, it is that exact ship. Might have been nice during the attack for Tattoine to be mentioned in passing but maybe that would have been too obvious.
1/2 half of RO was a bit of a mess, but 2nd half was excellent. Still disappointed with the very end (on the beach) but meh
Disney are happy, film made back what it cost to make in its first weekend
I was under the distinct impression that it was only a portion of the fleet that went to help because they voted against it. That is the entire rebel fleet? Vs 2 star destroyers? How unimpressive. It was 1 capital ship and a few frigates and Corvettes.
I also thought c3po and r2d2 were watching when the ships were launched? Or was it only when "rogue 1" took off. It certainly wasn't clear..
A good reason to go back and rewatch ��
With that in mind I think it was fudged a bit to be in continuity with a new hope. I do t care though because it was awesome.
The way I remember it from Thursday is that it was just some of the RA fleet and not all of it.
Only a few people from the RA "council" decided to chase after Rogue One - so quite a lot was left back at base. Thats how I took it anyway