but you['ve got realise, inserting scenes like this, then make the later scene with tarkin announcing the senate disolution superflous.

it's a bad story telling techinique, repeating a scene and showing it in narrative form from two different perspectives.

tarking coming in and announcing it is then unnecessary. however, you could show the emperor disolving the senate, then cut to the meeting room later where they discuss the death star instead + vaders force choke and you cut out the announcement part.