I really wish I had my copy of TFA to examine, but alas, I have lent it to my parents.

Anyway, it makes very little sense for Han and Chewie to gaze up at a Star Destroyer with approaching fighters and not at least attempt to get to the Falcon. Even my previous suggestion of just showing the star destroyer/destroyer behind an exploding ship makes no sense from this perspective.

I propose a more radical series of events. When our heroes first arrive at Maz’s castle, the First Order spy could report to Kylo Ren, and then we cut to an unused shot of him (perhaps the one cut where he’s on the Star Destroyer viewing the superlaser) and overlay some new dialogue where he orders the spy to plant a thermal detonator on the first ship scheduled to leave the castle. It would be better if Hux were to say this since he doesn’t care if BB-8 is destroyed, but Kylo has the advantage of a mask and a muffled voice. This provides some tension during the ensuing scenes. The exploding ship never has to be seen, just the sound of a ship taking off and its destruction during Finn’s entry onto the transport, causing him to turn around. Then the rest of the scenes can happen pretty much as structured.