What I caught was that the tech is somehow dependent on the Empire fleets formation through hyperspace and the lead ship in the formation would somehow be able to track and relay navigation to the rest. They couldn’t simply take out the lead ship because any ship in the Empire’s group could take the lead position and do this. So they had to go on board and disable the tech on the lead ship in a manner that wouldn’t be immediately detected.

Honestly I wouldn’t want any more of an explanation in the movie, leave the technobabble for books etc to fill in later as they did for the original movies. Its facinating fantasy but most people aren’t going to care exactly how a make believe technology “works”, sorry.

Anyway, yeah I found the Luke Rey interaction to be a little on the weak side as well but ok... and the Casino bit was out of place... and yeah character development was definitely missing on many levels, but overall I enjoyed the movie. The movie was fun and entertaining.

That being said I probably won’t watch again because while I can watch something once and just go for the ride enjoying a movie for what it is, I probably would be more critical a second time through.