I think the best thing to do is show (if possible) the Tantive receiving the transmission.

Then from there it’s a secret / mystery that R2-D2 has the Plans inside him. Until we hear Leia’s message in Star Wars in front of Obi-wan.

That’s also another reason for swapping out the credit card to simply be Obi-wans geographical location and perhaps a flight path for the escape pod and trajectory . A lot of Aubersh Text job done. Keep it quite Vague

This way nobody knows where the plans went which is cool.

I rather that not every detail needs to be spelled out. It retains the mystery in Star Wars a bit better. And also keeps C3-P0 in the Dark about the secret mission.

I honestly think there are a number of choices but I think Rogue One should be kept self contained if possible. That’s why it’s a nice chance to show Luke with Binoculars because It just will never work in Star Wars 1977.

I guess it’s an excuse for a Cameo shot but it means it would not ruin Star Wars that way. with repeating too much footage.

Would you move Slasher Vader in to Star Wars though? and extend the attack on the Tantive?