OtohaRandom question to those that have been interdicted by other players:
How long would you say it normally takes the attacking ship to load in to the instance behind you? Is it usually fairly simultaneous? Or is there a deliberate delay?
Varies to a large degree.
There are also two major types of interdictions: Mission related and spontaneous interdiction.
Mission related interdictors usually spawn on the radar soon after you jump into the destination system, but sometimes appear much later, especially if you have several missions and pursuers. The actual interdiction mostly occurs when you need to throttle down before the station approach, but may also happen immediately near the star.
Spontaneous interdictions may happen any time when you carry cargo or in certain systems with patrolling security forces.