According to the movement rules, slow ships can't close from long or extreme range. You need to be going at speed 5+ to move from long to close or vice versa.
Capital ships have long range sensors and weapons, but if they engage at said range, they can't get closer to each other to unleash their fighters. Also, the Interdictor cruiser causes a gravity well out to extreme range. How can any ship escape, since it's not possible to attain extreme range?
-EF